A control circuit includes a storage unit, a generation unit, an update unit, and a rotation control unit. The storage unit stores a predetermined number of register values to designate a step frequency of a stepper motor. The generation unit generates a micro step clock signal every time a period corresponding to each of the predetermined number of register values stored in the storage unit elapses. The update unit updates the predetermined number of register values stored in the storage unit every time the generation unit generates the predetermined number of micro step clock signals. The rotation control unit supplies a phase current based on the micro step clock signal generated by the generation unit to the stepper motor to rotate a rotor of the stepper motor by a micro step angle found by equally dividing a step angle of the stepper motor into the predetermined number.
A quartz crystal device includes a package and a crystal blank mounted inside the package. An area of a flat surface of a mounted surface of the blank is 10% or more and 30% or less with respect to an area of a flat surface specified by a width and a depth of the package.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
A crystal oscillator internally includes a package storing a crystal unit. The crystal oscillator is configured to include: a substrate having one surface side on which the crystal unit is disposed and another surface side on which a circuit component and a heating element are disposed, the circuit component including an oscillator circuit that oscillates the crystal unit, and the heating element regulating a temperature inside the package; a stepped portion formed at an inner wall of the package to support only an end portion of the substrate from the one surface side such that the crystal unit, the circuit component, and the heating element are spaced from a wall portion of the package; and a wire that connects between a terminal disposed at the heating element and a terminal disposed inside the package without via the substrate.
H03B 5/04 - Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
A quartz crystal device includes a package, a pedestal, and a crystal element. The pedestal is disposed in the package. The crystal element is bonded to the pedestal at four points. An angle formed by a center line connecting midpoints of both short sides of the crystal element and a straight line connecting a center point of the center line and each of bonding points is 22° or more and 30° or less.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03B 5/00 - Generation of oscillations using amplifier with regenerative feedback from output to input
7.
CRYSTAL UNIT, SEMIMANUFACTURED CRYSTAL UNIT, AND METHOD FOR MANUFACTURING CRYSTAL UNIT
A crystal unit includes a crystal element, excitation electrodes, and a container. The crystal element vibrates in a thickness-shear mode. The excitation electrodes are disposed on front and back surfaces of the crystal element. The crystal element is mounted to the container. The excitation electrodes are disposed on the crystal element. When a thickness of the crystal element is expressed as T, and a total thickness of the excitation electrodes disposed on the front and back surfaces of the crystal element is expressed as t, a ratio t/T is from 0.026 to 0.030.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 3/04 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
8.
BASE FOR PIEZOELECTRIC DEVICE AND PIEZOELECTRIC DEVICE
A base for a piezoelectric device includes: a first substrate, mounting pads, a contact hole and a contact hole wiring, a first metal film, a second substrate, a second metal film, a routing wiring, a castellation, and an external mounting terminal. The second substrate is made of a material identical to the material of the first substrate. The second substrate is bonded to the first substrate by intermetallic bonding. The second metal film is disposed on a third surface. The third surface is a surface on the first substrate side of the second substrate. The second metal film constitutes the intermetallic bonding together with the first metal film. The routing wiring reaches a fourth surface that is an opposite surface of the third surface of the second substrate via the third surface and a side surface of the second substrate from the contact hole wiring.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
9.
PIEZOELECTRIC DEVICE AND MANUFACTURING METHOD OF THE SAME
A piezoelectric device includes a conductive adhesive, a container, and an AT-cut crystal element. The AT-cut crystal element has at least one side surface intersecting with a Z′-axis of the crystallographic axis of the crystal constituted of three surfaces. When a dimension of a straight-line portion along the Z′-axis of a second side opposed to the first side is expressed as W1 and a dimension along the Z′-axis of the AT-cut crystal element is expressed as W0, W1/W0 is 0.91 or greater, and the straight-line portion has both sides constituting corner portions in approximately right angles with sides along an X-axis of the crystal of the AT-cut crystal element. The side of the first side is at a −X-side in an X-axis of the crystallographic axis of the crystal and a side of the second side is at a +X-side in the X-axis.
H01L 41/332 - Shaping or machining of piezo-electric or electrostrictive bodies by etching, e.g. lithography
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
[Problem] To obtain a crystal oscillator that is constructed in a reduced size but achieves stable oscillation output. [Solution] A crystal oscillator equipped with a package that houses a quartz resonator therein, the crystal oscillator comprising: a substrate which is provided with, on one surface side thereof, the quartz resonator and with, on the other surface side, a heat generator for adjusting the internal temperature of the package and circuit components including an oscillation circuit for oscillating said quartz resonator; a step part which is formed on an inner wall of the package for supporting only an edge part of the substrate from the one surface side so as to cause the quartz resonator, the circuit components, and the heat generator to be separated from the walls of the package; and a wire which, without going through the substrate, connects a terminal provided to the heat generator and a terminal provided inside the package.
H01L 23/04 - Containers; Seals characterised by the shape
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
An ultra-low noise crystal oscillator uses two crystal unit; an oscillation element of an oscillation circuit section and a crystal filter of a subsequent filter section. A Butler circuit in which the capacitors (C1, C2) and the inductor (L) connected in series is connected in parallel to the oscillator circuit section. This is the crystal oscillator that simplifies the manufacturing process, improves the manufacturing quality, and has good floor noise characteristics.
H03B 5/12 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
H03B 5/36 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
12.
Piezoelectric device and manufacturing method of the same
A piezoelectric device includes a container and an AT-cut crystal element. The AT-cut crystal element has at least one side surface intersecting with a Z′-axis of the crystallographic axis of the crystal constituted of three surfaces. The first surface is a surface equivalent to a surface formed by rotating the principal surface by 4°±3.5° with an X-axis of the crystal as a rotation axis. The second surface is a surface equivalent to a surface formed by rotating the principal surface by −57°±5° with the X-axis. The third surface is a surface equivalent to a surface formed by rotating the principal surface by −42°±5° with the X-axis. When two corner portions on a side of a second side opposed to the first side of the AT-cut crystal element are viewed in plan view, each of the two corner portions have an approximately right angle.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
A sensing device is provided. The sensing device includes a heat regulation mechanism to regulate a temperature of a piezoelectric resonator corresponding to a voltage, and uses a sensing sensor to cause a sensing object to adsorb to and desorb from the piezoelectric resonator by increase and decrease of the temperature. A drive voltage is regulated to regulate an amplification factor of a heat regulation voltage input to a drive voltage regulator that regulates the temperature of the heat regulation mechanism corresponding to the type of a sensing sensor connected to a device main body. Therefore, when a CQCM sensor that heats a crystal resonator using a heater circuit and a TQCM sensor that regulates a heat of the crystal resonator sing a Peltier element are each used, regulation ranges of the driving powers supplied to the respective heater circuit and Peltier element can be changed.
H01L 35/32 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof operating with Peltier or Seebeck effect only characterised by the structure or configuration of the cell or thermocouple forming the device
H02N 2/18 - Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
A pedestal on which a beveled blank is mounted is provided with a recess portion and an edge portion. The recess portion is provided in a central part of a surface of a pedestal body of the pedestal. The edge portion is adjacent to the recess portion to which the blank is fixed. The recess portion has a length in the short side direction of the pedestal body longer than that of the short side of the blank.
H05K 5/02 - Casings, cabinets or drawers for electric apparatus - Details
H03B 1/00 - GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS - Details
In an oscillator device that outputs a frequency signal based on an oscillation frequency of a crystal resonator and a frequency setting value, a frequency difference detector that obtains a difference value corresponding to a frequency difference between the output frequency of the oscillator device and an external clock signal and a temperature detector are disposed. An aging coefficient and a temperature characteristic coefficient are obtained based on a secular change of the difference value obtained in the frequency difference detector and a secular change of the detected temperature during a period where the external clock signal is obtained. Furthermore, a frequency correction value is calculated using the aging coefficient and the temperature characteristic coefficient during a holdover period, and the frequency correction value is added to the frequency setting value.
H03B 5/04 - Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03L 7/099 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H03C 1/62 - Modulators in which amplitude of carrier component in output is dependent upon strength of modulating signal, e.g. no carrier output when no modulating signal is present
To provide a technique for expanding a measurement dynamic range and performing a stable detection in a sensing sensor using a crystal resonator. A spacer is disposed between an oscillator circuit that oscillates a crystal resonator and a base body that cools an oscillator circuit to a cryogenic temperature, and an oscillator circuit board includes a heater resistor that heats the oscillator circuit. Therefore, the temperature of the oscillator circuit that does not fall below a functional limit temperature and is a low temperature as much as possible can be provided. A negative resistance of the oscillator circuit can be increased, the measurement dynamic range can be expanded, and the crystal resonator can be stably oscillated.
A sensing device that senses a substance to be sensed as a gas by causing a piezoelectric resonator to adsorb the substance to be sensed, includes: a substrate, a thermoelectric element unit, a support plate, and a base portion. A sensing module unit in which a substrate, a thermoelectric element unit, and a support plate are integrated is removably disposed to a base portion that performs at least one of heat supply and heat dissipation to the thermoelectric element unit.
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details
G01N 29/036 - Analysing fluids by measuring frequency or resonance of acoustic waves
G01N 29/32 - Arrangements for suppressing undesired influences, e.g. temperature or pressure variations
H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different main groups of groups , or in a single subclass of , , e.g. forming hybrid circuits
A PLL device includes a voltage control oscillation unit, an analog/digital converter, a quadrature demodulation unit, a comparison signal output unit, a phase difference detection unit, a loop filter, and a digital/analog converter. The quadrature demodulation unit quadrature-demodulates the digital feedback signal to obtain an in-phase component (I component) and a quadrature-phase component (Q component). The comparison signal has a set frequency of the output signal when the feedback signal is the output signal and has a frequency obtained by dividing the set frequency by the dividing number when the feedback signal is the frequency division signal. The phase difference detection unit obtains a phase difference between the digital feedback signal and the digital comparison signal based on the I component and the Q component of the digital feedback signal and the I component and an Q component of a comparison signal.
H03L 7/087 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop
H03L 7/091 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector using a sampling device
H03L 7/093 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
H03L 7/189 - Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using means for coarse tuning the voltage controlled oscillator of the loop comprising a D/A converter for generating a coarse tuning voltage
H03L 7/099 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
A sensing sensor includes an oscillator circuit, a base, a connection portion, and a temperature changing unit. The oscillator circuit oscillates the piezoelectric resonator. The base includes a base main body in which a depressed portion is provided and a lid portion at one side, supports the piezoelectric resonator at another side, and is for taking the oscillation frequency to an outside of the sensing sensor. The depressed portion houses the oscillator circuit. The lid portion covers the depressed portion. The connection portion is disposed at the one side of the base and connected to a cooling mechanism for cooling the base from the one side. The temperature changing unit is interposed between the piezoelectric resonator and the base, so as to cool and heat the piezoelectric resonator and transfer a heat radiated for cooling the piezoelectric resonator from the other side of the base to the one side.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
G01K 11/26 - Measuring temperature based on physical or chemical changes not covered by group , , , or using measurement of acoustic effects of resonant frequencies
H03B 5/04 - Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
20.
AT-cut crystal element, crystal unit, and semi-manufactured crystal unit
An AT-cut crystal element includes a vibrator and a supporting portion. The vibrator has a planar shape with an approximately rectangular shape. The supporting portion is connected to one short side of the vibrator and has a thickness thicker than a thickness of the vibrator. The AT-cut crystal element has an oscillation frequency of approximately 76 Mhz. The vibrator has a distal end portion that is an end portion on a side opposite to the supporting portion. The distal end portion is formed to have a protrusion shape toward a distal end side thereof. The vibrator has both ends formed to have a protrusion shape toward an outside direction along the short side. The vibrator has a long side dimension L and a short side dimension W. A W/L is in a range of 0.74 to 0.79 or in a range of 0.81 to 0.93.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
An angular error detecting device detects an angular error in a receiving direction of a frequency signal from a tracking target with respect to a front direction of an antenna based on a phase difference of a first reception signal received at a first receiving unit of the antenna and a second reception signal received at a second receiving unit having a receiving position in the antenna different from a receiving position of the first receiving unit. The angular error detecting device includes a reception signal output unit, a pilot signal supply unit, a pilot phase difference detection unit, a correction unit, and an angular error detection unit. The angular error detection unit detects the angular error based on the one side corrected at the correction unit and the other side that is not corrected of the sum signal and the difference signal.
A pedestal for a vibration element includes a main body that includes two connection portions, two clearance portions, a mounting portion, and arm portions. The two connection portions are formed along long sides of the main body and contact the base plate. The two clearance portions are formed on insides of the main body with respect to the connection portions and formed along the long sides. The mounting portion is located between the two clearance portions. The vibration element is mounted to the mounting portion. The arm portions are formed on four corners of the main body and connect the mounting portion to the connection portions. A metal pattern is connected to an electrode formed on the vibration element. The metal pattern is formed to connect the mounting portion, the arm portions, and the connection portions.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03B 5/04 - Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
23.
PEDESTAL, VIBRATOR, AND OSCILLATOR FOR VIBRATION ELEMENT
[Problem] To provide a pedestal, a vibrator, and an oscillator with which vibration resistance is improved by suppressing the influence of vibration from the outside, and phase noise characteristics can be improved. [Solution] Provided are a pedestal, and a vibrator and an oscillator which are provided with the pedestal, the pedestal having: connection parts 14 connected to a substrate of a package 3 along long sides of a main body; gap parts 10c, 10d formed inside the connection parts 14 along the long side; a mount part 11 which is for a quartz piece 2 and inserted into the gap parts 10c, 10d; and arm parts 13 which have shapes curved in an arc shape and connect the mounting parts 11 and the connection parts 14 on the four corners of the main body.
A crystal unit includes an AT-cut crystal element that has a planar shape in a rectangular shape and a part as a thick portion. The crystal element includes a first end portion, a first depressed portion, the thick portion, a second depressed portion, and a second end portion in this order from a side of one short side, in viewing a cross section taken along a longitudinal direction near a center of the short side. The first depressed portion is a depressed portion disposed from the thick portion toward the first end portion side, depressed with a predetermined angle θa and subsequently bulged, and connected to the first end portion. The second depressed portion is a depressed portion disposed from the thick portion toward the second end portion side, depressed with a predetermined angle θb and subsequently bulged, and connected to the second end portion.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
A crystal unit includes an AT-cut crystal element that has a planar shape in a rectangular shape and a part as a thick portion. The crystal element includes a first end portion, a depressed portion, the thick portion, and a second end portion in this order from a side of one short side in viewing a cross section taken along a longitudinal direction near a center of the short side. The depressed portion is a depressed portion disposed from the thick portion toward the first end portion side, depressed with a predetermined angle θa and subsequently bulged, and connected to the first end portion.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
H01L 21/306 - Chemical or electrical treatment, e.g. electrolytic etching
Provided is a sensing device that uses a detection sensor that comprises a temperature adjustment mechanism for adjusting the temperature of a piezoelectric vibrator according to a voltage and causes the desorption of an object to be sensed from the piezoelectric vibrator by increasing/decreasing the temperature, wherein a voltage adjustment unit for adjusting a voltage for adjusting the temperature of the temperature adjustment mechanism is made to be common and not dependent on the temperature adjustment mechanism of the detection sensor. A drive voltage is adjusted such that the amplification factor for the temperature adjustment voltage input into the drive voltage adjustment unit 73 for adjusting the temperature of the temperature adjustment mechanism is adjusted according to the type of a detection sensor 2 connected to a device body part 3. As a result, when a CQCM sensor 2A that heats a crystal oscillator 4 using a heater circuit 41 and a TQCM sensor 2B that adjusts the temperature of a crystal oscillator 4 using a Peltier element 43 are both used, the adjustment range of the drive power supplied to the heater circuit 41 and Peltier element 43 can be changed.
G01N 5/02 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
[Problem] To provide a technique, with respect to an oscillating device that uses a crystal oscillator and stabilizes an oscillating frequency on the basis of an external clock signal, for stabilizing the oscillating frequency that is output even when the external clock is interrupted. [Solution] An oscillating device which outputs a frequency signal on the basis of an oscillating frequency of a crystal oscillator 10 and a frequency setting value and is provided with: a frequency difference detection unit 207 for determining a difference value corresponding to a frequency difference between an output frequency of the oscillating device and an external clock signal; and a temperature detection unit. During a period in which the external clock signal is being acquired, an aging coefficient (a1) and a temperature characteristic coefficient (a2) are determined on the basis of a change over time of the difference value determined by the frequency difference detection unit 207, and a change over time of a detected temperature. Further, during a hold-over period, a frequency correction value is calculated using the aging coefficient (a1) and the temperature characteristic coefficient (a2), and is added to the frequency setting value.
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H03L 7/14 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail
A measurement device 1 comprises: an acquisition unit 19 for acquiring reference information associating the distance between an object and a position where reflected waves that are electromagnetic waves produced when predetermined electromagnetic waves transmitted toward the object are reflected at the object are received, a phase of the reflected waves, and a physical property of the object; a transmitting antenna 11 for transmitting electromagnetic waves toward a measurement subject 2; a receiving antenna 12 for receiving reflected waves from the measurement subject 2; and an identification unit 20 for identifying a physical property of the measurement subject 2 on the basis of the phase of the reflected waves received by the receiving antenna 12, by consulting the reference information that corresponds to an object corresponding to the material of the measurement subject 2 and that corresponds to the distance between the measurement subject 2 and the receiving antenna 12.
G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
Provided is a sensing sensor in which a crystal oscillator is used, wherein detection involving a broader and stable measurement dynamic range is performed. A spacer 9 is provided between an oscillation circuit that causes a crystal oscillator 5 to oscillate and a base body 20 that cools the oscillation circuit 62 to an ultra-low temperature, and a heater resistor 64 for heating the oscillation circuit 62 is provided to an oscillation circuit substrate 3. Therefore, the temperature of the oscillation circuit 62 can be set as low as possible without falling below the functional limitation temperature. The negative resistance of the oscillation circuit 62 can be increased, the measurement dynamic range can be broadened, and the crystal oscillator 5 can be caused to oscillate stably.
G01N 5/02 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
30.
Substance detection system and substance detection method
A substance detection system and a substance detection method are provided. The temperature identifying portion identifies a surface temperature of the quartz substrate, based on a difference between a deviation of the fundamental wave frequency from at least any predetermined reference fundamental wave frequency of the reference crystal resonator and the detecting crystal resonator and a deviation of the third harmonic frequency from a predetermined reference third harmonic frequency. The substance identifying portion identifies a temperature at which a contaminant attached to the detecting crystal resonator is desorbed from the detecting crystal resonator to identify the contaminant based on the temperature at which the contaminant is desorbed. The temperature is identified based on a difference between the fundamental wave frequency of the reference crystal resonator and the fundamental wave frequency of the detecting crystal resonator measured by the frequency measuring portion and the temperature identified by the temperature identifying portion.
G01N 25/08 - Investigating or analysing materials by the use of thermal means by investigating sintering of boiling point
G01K 11/26 - Measuring temperature based on physical or chemical changes not covered by group , , , or using measurement of acoustic effects of resonant frequencies
H03B 5/04 - Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
G01N 5/04 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
G01N 29/036 - Analysing fluids by measuring frequency or resonance of acoustic waves
G01N 29/44 - Processing the detected response signal
G01N 29/30 - Arrangements for calibrating or comparing, e.g. with standard objects
A single-chamber-type temperature-sensor-provided crystal unit includes: a single chamber; and a quartz-crystal vibrating piece and a temperature sensor, provided in the single chamber. The quartz-crystal vibrating piece has a square planar shape. The quartz-crystal vibrating piece is secured in the single chamber at two securing portions via conductive members. The two securing portions are in proximities of both ends of a first side of the quartz-crystal vibrating piece. The temperature sensor has a rectangular parallelepiped shape. The temperature sensor is disposed such that a longitudinal surface of the temperature sensor is parallel to a line segment Y and the temperature sensor is close to a side of the two securing portions within the single chamber, when a line segment connecting the two securing portions is defined as the line segment Y.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
A signal processing circuit includes a clock generating circuit, a divider circuit, a converter, and an amplifier. The clock generating circuit outputs a first clock. The divider circuit divides the first clock to output a second clock having a frequency lower than a frequency of the first clock. The converter converts an input signal into a digital signal based on a first clock output from the clock generating circuit and a second clock output from the divider circuit. The amplifier, disposed between the clock generating circuit and the divider circuit, has a phase variation property opposite to a phase variation property of the divider circuit. The phase variation property of the divider circuit indicates a relationship between a phase variation amount of an output signal with respect to an input signal in the divider circuit and an ambient temperature of the divider circuit.
In an OCXO, which outputs an oscillation frequency by oscillating a crystal resonator, a correspondence relationship between an oscillation frequency and an elapsed time at a beginning after a start of oscillation of a first crystal resonator is acquired. Based on the acquired result, data after the beginning and corresponding to a correspondence relationship between an accumulated elapsed time of the oscillation and the oscillation frequency after the start of the oscillation is obtained. Based on the accumulated elapsed time of the oscillation and this data, a frequency setting value is corrected. While an output frequency of the first crystal resonator fluctuates in association with the elapsed time, the output frequency is corrected by the frequency correction value corresponding to the accumulated elapsed time, thereby stabilizing the oscillation frequency.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03L 1/00 - Stabilisation of generator output against variations of physical values, e.g. power supply
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H03L 1/04 - Constructional details for maintaining temperature constant
H03L 7/00 - Automatic control of frequency or phase; Synchronisation
An ultrasonic transducer includes a piezoelectric element in round shape, an acoustic lens, and an acoustic matching layer. The piezoelectric element generates an ultrasonic sound wave. The acoustic matching layer decreases a reflection of the ultrasonic sound wave from a subject. The piezoelectric element has a center having a hole through which an optical fiber that guides a light of a light source passes. The ultrasonic transducer transmits and receives the ultrasonic sound wave while emitting the light. The acoustic lens has a material using a resin with a withstand voltage, mainly polymethylpentene. The acoustic matching layer has a thickness set to λ/4 by not applying a polyparaxylylene coating for ensuring the withstand voltage on the acoustic matching layer. The optical fiber has a distal end configured not to pass through the acoustic lens. The piezoelectric element and the acoustic matching layer have shapes in a planar surface.
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/00 - Apparatus for testing the eyes; Instruments for examining the eyes
G01N 29/28 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details providing acoustic coupling
An outer case for an ultrasonic probe that houses a module of the ultrasonic probe is provided. The outer case includes a grip case gripped by a user and a head case that engages with the grip case. The grip case has a first engaging portion where one or a plurality of convex portions are disposed. The head case has a second engaging portion where one or a plurality of depressed portions are disposed at positions where the one or plurality of depressed portions engage with the one or plurality of convex portions. The convex portion and the depressed portion are engaged to be locked.
G01S 7/52 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
H05K 5/00 - Casings, cabinets or drawers for electric apparatus
H05K 5/02 - Casings, cabinets or drawers for electric apparatus - Details
A61B 8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
38.
Piezoelectric device, piezoelectric vibrating piece, and method for manufacturing piezoelectric vibrating piece
A piezoelectric device includes a piezoelectric vibrating piece and a container. The piezoelectric vibrating piece has a rectangular planar shape and has a portion of a first side secured to the container. The piezoelectric vibrating piece has a second side opposing the first side and includes a projecting portion that projects outward from the second side in at least one of proximity of both ends of the second side along the second side.
H01L 41/332 - Shaping or machining of piezo-electric or electrostrictive bodies by etching, e.g. lithography
H03H 9/17 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H01L 41/18 - Selection of materials for piezo-electric or electrostrictive elements
A quartz crystal device includes a crystal element, a container, a conductive adhesive having flexibility, first pillow portions, and a second pillow portion. The first pillow portions hold the crystal element floated from an inner bottom surface of the container at the proximities of the two positions. The second pillow portion opposes the crystal element at a proximity of a second side. The second side opposes the first side of the crystal element. A height of the first pillow portion is represented as h and a length of the first pillow portion in a direction perpendicular to the first side is represented as X1, where the h is 20 μm to 50 μm and the X1 is 150 μm or less. The conductive adhesive covers at least a top surface and a side surface of the first pillow portion. The side surface is in a center side of the crystal element.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 9/13 - Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
A crystal unit includes an AT-cut crystal element that has a planar shape in a rectangular shape and a part as a thick portion. The crystal element includes a first end portion, a first depressed portion, the thick portion, a second depressed portion, and a second end portion in an order from a side of one short side in viewing a cross section taken along a longitudinal direction near a center of the short side. The first depressed portion is a depressed portion disposed from the thick portion toward the first end portion side, depressed with a predetermined angle θa and subsequently bulged, and connected to the first end portion. The second depressed portion is a depressed portion disposed from the thick portion toward the second end portion side, depressed with a predetermined angle θb and subsequently bulged, and connected to the second end portion.
H03H 9/13 - Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
H01L 41/332 - Shaping or machining of piezo-electric or electrostrictive bodies by etching, e.g. lithography
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H01L 41/053 - Mounts, supports, enclosures or casings
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
H03H 9/17 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
A PLL circuit includes a voltage control oscillator, a frequency difference detector, a phase difference detector, and an outputter. The frequency difference detector detects a frequency difference between a reference signal and the oscillation signal and outputs a first control value based on the detected frequency difference. The phase difference detector detects a phase difference between the reference signal and the oscillation signal, and outputs a second control value based on the detected phase difference. The outputter outputs the control voltage based on the first control value and the second control value to the voltage control oscillator while the second control value does not exceed a predetermined range, and outputs the control voltage based on a corrected value obtained by correcting the first control value and the second control value to the voltage control oscillator while the second control value exceeds a predetermined range.
H03L 7/087 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop
H03L 7/099 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
A surface mount type device includes: an electronic component, a main substrate on which the electronic component is mounted, a pedestal on which the main substrate is mounted, a lower substrate on which the pedestal is mounted, and a cover mounted on the lower substrate so as to cover the pedestal. The soldering pattern is soldered with the cover from a region where the cover is mounted to an inside of the lower substrate, on the lower substrate. The pedestal includes a cut-out portion in a side surface portion so as to form a space above the soldering pattern. The cover is secured to the soldering pattern by a solder formed in the space.
A quartz crystal device includes a quartz-crystal vibrating piece, a container, and a pedestal. The container houses the quartz-crystal vibrating piece. The pedestal is located between the quartz-crystal vibrating piece and the container for connecting and fixing the quartz-crystal vibrating piece to the container. The pedestal is configured with a crystal. The pedestal is fixed to the container at three places of a first fixation point, a second fixation point, and a third fixation point in a plan view. The first fixation point, the second fixation point, and the third fixation point are configured so as to become positions where an inner center, an outer center, or a gravity center of a triangle formed by connection of the first, second and third fixation points and a gravity center of the pedestal match.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
45.
Crystal controlled oscillator and manufacturing method of crystal controlled oscillator
A crystal controlled oscillator includes a crystal unit, an integrated circuit, and an insulating resin. The crystal unit contains a crystal vibrating piece resonating at a predetermined frequency. The integrated circuit places the crystal unit. The integrated circuit includes an oscillator circuit oscillating the crystal vibrating piece. The insulating resin is formed to cover the crystal unit on the integrated circuit.
H03L 7/00 - Automatic control of frequency or phase; Synchronisation
H03B 1/02 - Structural details of power oscillators, e.g. for heating
C30B 1/00 - Single-crystal growth directly from the solid state
H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
H01L 21/74 - Making of buried regions of high impurity concentration, e.g. buried collector layers, internal connections
H01L 21/82 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
A piezoelectric device includes a piezoelectric vibrating piece, a container, and a lid. The piezoelectric vibrating piece is bevel processed and has a bevel surface at one end of the piezoelectric vibrating piece. Thea container holds the piezoelectric vibrating piece with the bevel surface at the one end of the piezoelectric vibrating piece. The container has a connection pad at a holding region of the container and a pillow portion at a region corresponding to the other end of the piezoelectric vibrating piece. The lid member seals the container. The connection pad is buried in the container at the holding region in a state of a flat surface with a surface of the container and in a state where the surface of the connection pad is exposed. The piezoelectric vibrating piece is spanned between the surface of the connection pad and a top surface of the pillow portion.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
An ultrasonic transducer includes a housing, a driving device, and a detecting device. The housing internally includes an ultrasound transmitting/receiving unit, the housing sealing ultrasonic propagation liquid. The driving device includes a driving motor and an intermediate member. The driving device is configured to transmit a rotary driving force from the driving motor to swing the ultrasound transmitting/receiving unit. The detecting device includes a detecting member and is configured to detect an origin position serving as a reference in control of the swing of the ultrasound transmitting/receiving unit. The driving device is configured to transmit the rotary driving force to the intermediate member, extract a rotation of the intermediate member, decelerate the rotation of the intermediate member and transmit the rotation to the detecting member thereof in a route different from the driving device, and detect the rotation of the detecting member by a sensor to detect an origin position.
G01N 29/265 - Arrangements for orientation or scanning by moving the sensor relative to a stationary material
A61B 8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
A61B 8/08 - Detecting organic movements or changes, e.g. tumours, cysts, swellings
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details
A piezoelectric vibrating piece includes a piezoelectric substrate and excitation electrodes. The excitation electrode includes a main thickness portion and an inclined portion, the main thickness portion has a constant thickness, the inclined portion is formed on a peripheral area of the main thickness portion, the inclined portion gradually decrease in thickness from a part contacting the main thickness portion toward an outermost periphery of the excitation electrode. The inclined portion has a width as an inclination width in a length of 0.84 times or more and 1.37 times or less of a first flexural wavelength and 2.29 times or more and 3.71 times or less of a second flexural wavelength, the first flexural wavelength is a wavelength of a flexure vibration at a fundamental wave of the thickness-shear vibration, the second flexural wavelength is a wavelength of a flexure vibration at a third harmonic of the thickness-shear vibration.
H03H 9/13 - Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
A sensing sensor includes a main body portion, a piezoelectric resonator, a connecting terminal, and an information storage. The main body portion includes a supply region to which the sample solution is supplied. The piezoelectric resonator is disposed to face the supply region and includes a capturing layer that captures a sensing object. The connecting terminal is configured to attachably/detachably connect a conductive path connected to an electrode of the piezoelectric resonator to a frequency measuring unit. The information storage stores calibration curve information to specify a calibration curve that indicates a relationship between a density of the sensing object and a frequency variation amount of the piezoelectric resonator before and after supplying the sample solution.
G01N 5/02 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
G01G 3/13 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing having piezoelectric or piezo-resistive properties
G01G 3/16 - Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of frequency of oscillations of the body
G01N 29/036 - Analysing fluids by measuring frequency or resonance of acoustic waves
H01L 41/04 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof - Details of piezo-electric or electrostrictive elements
G01N 15/06 - Investigating concentration of particle suspensions
G01G 23/01 - Testing or calibrating of weighing apparatus
H01L 41/113 - Piezo-electric or electrostrictive elements with mechanical input and electrical output
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details
G01N 29/44 - Processing the detected response signal
To provide an oscillator configured to output a frequency signal accurately reflecting a result of a temperature adjustment by a heater circuit. An oscillator outputs a frequency signal with a frequency preliminarily set. A crystal resonator connected to an oscillator circuit is housed inside a crystal resonator cover. Soldering this crystal resonator cover onto the base plate inside the container disposes the crystal resonator on the base plate inside the container. A heater circuit performs a temperature adjustment inside the container based on a temperature detected by a temperature detector. At this time, the crystal resonator cover that houses the crystal resonator is constituted of a phosphorus deoxidized copper.
H03B 5/04 - Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03H 9/205 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having multiple resonators
H03L 1/04 - Constructional details for maintaining temperature constant
H03L 5/00 - Automatic control of voltage, current, or power
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
52.
Piezoelectric vibrating piece and piezoelectric device
A piezoelectric vibrating piece includes a piezoelectric substrate, a first excitation electrode, and a second excitation electrode. The piezoelectric substrate is formed into a flat plate shape and vibrates in a thickness-shear vibration mode. The first excitation electrode is formed on one principal surface of the piezoelectric substrate. The second excitation electrode is formed on another principal surface of the piezoelectric substrate. The first excitation electrode is formed to entirely have an identical thickness. The second excitation electrode has a main thickness portion and an inclined portion. The main thickness portion has a constant thickness. The inclined portion is formed in a peripheral area of the main thickness portion and gradually decreases in thickness from a portion in contact with the main thickness portion to an outermost periphery of the second excitation electrode. The main thickness portion has a thickness larger than the thickness of the first excitation electrode.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 9/13 - Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
H03H 9/17 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
H03H 3/04 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
A piezoelectric device includes a base, a piezoelectric vibrating piece, and a cover. The base has a depressed portion and a bank portion. The piezoelectric vibrating piece is housed within the depressed portion. The cover is bonded on a top surface of the bank portion of the base with a sealing metal. The top surface of the base has an inclined surface that inclines down toward an inside of the base in a direction along a width direction of the bank portion or an inclined surface that inclines down toward an outside of the base in the direction along the width direction of the bank portion.
[Problem] To provide a temperature detection device with which there is no break in temperature detection when detecting the temperature on the basis of a change in the oscillation frequency of a crystal piece. [Solution] First and second oscillation regions 40, 50 are formed in a crystal piece (14), and the first or second oscillation region 40, 50 is caused to oscillate with a 3x wave or a fundamental wave by the switching of switch units SW1-SW3. Then, respective frequency rates of change F2, F1 for the 3x wave and the fundamental wave in the first oscillation region are found by a data processing unit 6, and from the difference of such rates of change, the temperature is detected. In addition, whether the oscillation of the first oscillation region 40 is abnormal or not is monitored on the basis of the results of measuring the frequency of the first oscillation region 40, and when the oscillation is determined to be abnormal, the second oscillation region 50 is used to detect the temperature from the same difference (F2'-F1').
G01K 7/32 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using change of resonant frequency of a crystal
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03H 9/205 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having multiple resonators
55.
SUBSTANCE DETECTION SYSTEM AND SUBSTANCE DETECTION METHOD
A substance detection system comprising: a reference crystal oscillator and a detection crystal oscillator formed on a single crystal substrate; an oscillation circuit module that sequentially oscillates the reference crystal oscillator and the detection crystal oscillator at a fundamental wave frequency and a third-harmonic wave frequency; a temperature identifying unit that identifies the surface temperature of the crystal substrate on the basis of a differential between a deviation of the fundamental wave frequency relative to a prescribed reference fundamental wave frequency of at least one of the reference crystal oscillator and detection crystal oscillator, and a deviation of the third-harmonic wave frequency relative to a prescribed reference third-harmonic wave frequency; and a substance identifying unit that, on the basis of the difference between the fundamental wave frequency of the reference crystal oscillator and the fundamental wave frequency of the detection crystal oscillator measured by a frequency measuring unit and on the basis of the temperature identified by the temperature identifying unit, identifies a temperature at which a contamination substance adhered to the detection crystal oscillator has detached therefrom and then identifies the contamination substance on the basis of the temperature at which the detachment occurred.
G01N 5/04 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
A piezoelectric device is provided and includes: a piezoelectric vibrating piece, having an outer shape in rectangular shape and including an excitation electrode formed on both principal surfaces which are a top surface and a lower surface, an electrode pad formed at both ends of one short side, and an extraction electrode extracted from the excitation electrode to the electrode pad to be electrically connected to the electrode pad; a package, including a placement surface on which the piezoelectric vibrating piece is placed as opposed to the lower surface of the piezoelectric vibrating piece, and an adhesion pad formed on the placement surface; and a conductive adhesive, securing the piezoelectric vibrating piece to the package and electrically connecting the adhesion pad to the electrode pad. An adhesive is applied on the top surface of the piezoelectric vibrating piece and between the conductive adhesive and the excitation electrode.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
A piezoelectric device includes a piezoelectric vibrating piece, an excitation electrode, an extraction electrode, a container, a pad, a conductive member, and a heat conductive metal film. The excitation electrode is disposed on a front surface and a back surface of the piezoelectric vibrating piece. The extraction electrode is extracted from the excitation electrode. The container houses the piezoelectric vibrating piece. The pad is disposed in the container, and the pad is connected to the piezoelectric vibrating piece. The conductive member connects the pad to the extraction electrode. The heat conductive metal film is disposed at least on a surface of a pad side of the piezoelectric vibrating piece, the heat conductive metal film is extracted from the extraction electrode without contacting the excitation electrode.
H01L 41/053 - Mounts, supports, enclosures or casings
H01L 41/22 - Processes or apparatus specially adapted for the assembly, manufacture or treatment of piezo-electric or electrostrictive devices or of parts thereof
H01L 41/29 - Forming electrodes, leads or terminal arrangements
58.
Clock generating circuit and signal processing device
A clock generating circuit includes a dividing unit and a distribution unit. The dividing unit divides a reference clock to generate a divided clock, and the divided clock has a frequency of 1/N times of a frequency of the reference clock, where N is an integer of two or more. The distribution unit distributes the reference clock to a first route and a second route, the first route includes an output terminal that outputs a clock with a frequency identical to the frequency of the reference clock, and the second route includes the dividing unit. The dividing unit includes one or more amplifiers, one or more dividing circuits, and a correction circuit. The correction circuit is disposed between the amplifier and the dividing circuit, and the correction circuit corrects a level of an input clock input to the dividing circuit.
H03L 7/18 - Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
An AT-cut crystal element is provided for reducing unnecessary vibration and for improving impedance of a resonator. Two side surfaces intersecting with a Z′-axis of a crystallographic axis of crystal are constituted of three surfaces of a first surface as an m-surface of quartz crystal, a second surface that intersects with the first surface and is other than the m-surface, and a third surface that intersects with the second surface and is other than the m-surface. Moreover, the second surface is a surface corresponding to a surface obtained by rotating a principal surface of the AT-cut crystal element by −74±3° having an X-axis of crystal as a rotation axis, and the third surface is a surface corresponding to a surface obtained by rotating the principal surface by −56±3° having the X-axis of the crystal as the rotation axis.
H03H 9/13 - Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
H01L 41/332 - Shaping or machining of piezo-electric or electrostrictive bodies by etching, e.g. lithography
H03H 3/04 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
A crystal resonator vibrates in a thickness-shear mode. The crystal resonator includes excitation electrodes being disposed on a front surface and a back surface of a crystal element. The excitation electrodes are disposed on the crystal element to have a positional relationship, where a displacement distribution at an edge of the excitation electrode on the front surface is identical to a displacement distribution at an edge of the excitation electrode on the back surface.
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 9/13 - Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
H03H 3/04 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
An oven-controlled crystal oscillator includes a base substrate, a power transistor, and a surface mount type crystal resonator. The base substrate has a bottom surface on which a mounting terminal for surface mounting is disposed. The power transistor is mounted on the base substrate. The surface mount type crystal resonator is mounted on the power transistor.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
H03L 7/00 - Automatic control of frequency or phase; Synchronisation
H03L 1/04 - Constructional details for maintaining temperature constant
H01L 23/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details of semiconductor or other solid state devices
An electronic device includes at least two boards and support pillars. The at least two boards include hole portions. The support pillars inserted into the hole portions such that the at least two boards are held mutually separated. The hole portions include tapered surfaces that incline toward center portions of the hole portions from a surface on a side from which the support pillars of the boards are inserted.
H05K 7/00 - Constructional details common to different types of electric apparatus
H05K 5/00 - Casings, cabinets or drawers for electric apparatus
H01L 21/8238 - Complementary field-effect transistors, e.g. CMOS
H01L 23/522 - Arrangements for conducting electric current within the device in operation from one component to another including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
H01L 23/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details of semiconductor or other solid state devices
H01L 27/092 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate complementary MIS field-effect transistors
H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
An electronic device includes a first board, a second board, and support pillars. The support pillars hold the first board and the second board mutually separated. The first board has a first surface on which an electronic component is mounted. The first board has a second surface that includes depressed portions into which the support pillars extending from the second board are inserted.
H05K 3/34 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
H01L 23/049 - Containers; Seals characterised by the shape the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body the other leads being perpendicular to the base
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
A crystal oscillator includes a quartz crystal piece, a semiconductor chip, and a temperature sensor. The semiconductor chip includes an oscillator circuit to cause the quartz crystal piece to oscillate and a first bump. The first bump is connected to the oscillator circuit and disposed on a surface of the semiconductor chip facing the quartz crystal piece. The temperature sensor is bonded to the first bump.
VCO of the frequency synthesizer 1 such that a spurious frequency does not exist within a predetermined frequency range and a dividing number of a variable frequency divider 302 disposed on a PLL circuit 3 is minimum. Setting units 11 and 24 read setting items stored in the storage unit 12 to set respective units.
H03B 21/00 - Generation of oscillations by combining unmodulated signals of different frequencies
H03L 7/18 - Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
H03L 7/091 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector using a sampling device
H03L 7/183 - Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
A crystal resonator includes a crystal element and excitation electrodes. The crystal element has a pair of principal surfaces parallel to an X′-axis and a Z′-axis. The X′-axis is an axis of rotating an X-axis as a crystallographic axis of a crystal in a range of 15 degrees to 25 degrees around a Z-axis as a crystallographic axis of the crystal. The Z′-axis is an axis of rotating the Z-axis in a range of 33 degrees to 35 degrees around the X′-axis. The excitation electrodes are formed on the respective principal surfaces of the crystal element. Elliptical mesa portions or elliptical inverted mesa portions are formed on the respective principal surfaces. The mesa portions project from outer peripheries of the principal surfaces. The inverted mesa portions are depressed from the outer peripheries of the principal surfaces.
H03H 9/17 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
H03H 3/04 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
One side of the surfaces of the crystal resonator 4 including an adsorbing film 46 that absorbs a sensing object on an excitation electrode 42A is pressed with the channel forming member 5 using the upper-side cover body 21 to form a channel 57, which runs from one end side to the other end side on one side of surfaces of the crystal resonator 4. A depressed portion 84 is disposed in at least one of: a position opposed to the channel 57 and at a surface on an opposite side of the channel 57 in the channel forming member 5, and a position opposed to the channel 57 and at a surface on the opposite side of the channel 57 in the pressing member with respect to the channel forming member 5.
An oscillator circuit includes an oscillating unit, a counter unit, and a set value generator. The oscillating unit is configured to output an oscillation signal having a frequency corresponding to an input frequency setting value. The counter unit is configured to count a number of pulses of the oscillation signal during a time period corresponding to a period of a reference signal input from outside. The set value generator is configured to generate the frequency setting value every predetermined time period based on the count of the pulses counted by the counter unit.
H03L 7/18 - Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
H03L 7/08 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop
H03L 7/095 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using a lock detector
H03L 7/099 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
An oven controlled crystal oscillator includes a crystal oscillator, a temperature control circuit, and a control integrated circuit. The crystal oscillator includes a crystal resonator and an oscillator circuit. The temperature control circuit includes a heater resistor, a thermistor, a first resistor, a second resistor, a third resistor, a differential amplifier, a thermosensor, and a fourth resistor. The thermosensor is disposed in parallel to the first resistor. The thermosensor has one end to which the supply voltage is supplied. The fourth resistor has one end connected to another end of the thermosensor and another end that is grounded. The control integrated circuit includes a digital variable resistor and a controller. The digital variable resistor is connected to the thermosensor in parallel. The controller adjusts a resistance value of the digital variable resistor based on a digital control signal input from outside.
H03B 5/36 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H03L 1/04 - Constructional details for maintaining temperature constant
G05D 23/24 - Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. thermistor
A sensing sensor includes a wiring board, a piezoelectric resonator, and a gel-like protective agent. The piezoelectric resonator has one surface side on which an adsorbing film is formed. The adsorbing film is constituted of biomolecules. The protective agent is disposed so as to cover a surface of the adsorbing film. The protective agent is configured to suppress an inactivation of the biomolecules. The channel forming member is disposed so as to cover a region of the one surface side of the wiring board including the piezoelectric resonator. The channel forming member includes an injection port of the sample solution. The flow passage is disposed between the wiring board and the channel forming member. The flow passage is configured to allow the sample solution supplied to the injection port to flow from one end side to another end side on the one surface side of the piezoelectric resonator.
G01N 33/551 - Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals the carrier being inorganic
G01N 33/543 - Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
A crystal oscillator includes a surface mount type crystal unit and a mounting substrate. The surface mount type crystal unit includes a ceramic container. The surface mount type crystal unit has a rectangular shape as a planar shape. The mounting substrate includes a ceramic substrate on which an electronic component is mounted, the mounting substrate having a rectangular shape as a planar shape. The crystal oscillator has a structure where the surface mount type crystal unit and the mounting substrate are laminated, and both terminals of the surface mount type crystal unit and the mounting substrate are connected with a bonding material. The mounting substrate and the surface mount type crystal unit are connected in a positional relationship where a long side of the mounting substrate and a long side of the surface mount type crystal unit are orthogonal.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
A signal processing device includes a plurality of converters, a generator, a distributor, a first line, and a second line. A plurality of converters is configured to convert analog signals to digital signals based on a clock signal to output the digital signals. The generator is configured to generate the clock signal based on a reference signal. The distributor is configured to distribute a generated clock signal to the plurality of converters. The first line passes through only a region assigned to each of the plurality of converters to supply the analog signal to the converter. The second line passes through only the region to supply a distributed clock signal to the converter.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03L 7/08 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop
H03K 19/177 - Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
H03M 1/34 - Analogue value compared with reference values
73.
Piezoelectric vibrating piece and piezoelectric device
A piezoelectric vibrating piece includes a vibrating piece body including a vibrator and at least one pair of excitation electrodes formed on a front surface and a back surface of the vibrator. The vibrating piece body is a twice rotated quartz-crystal vibrating piece. The pair of excitation electrodes are arranged in a Z′″-axis direction determined by an X′″-axis and obliquely disposed with respect to the Y″-axis direction. The X′″-axis is rotated by 260° to 300° counterclockwise about a Y″-axis using a +X″-axis direction as a reference. The pair of excitation electrodes are formed to have respective semicircle shapes including straight line portions extending in the X′″-axis direction and to be disposed in a state where the straight line portions overlapping with one another. The straight line portion of the excitation electrode includes an inclined portion that gradually decreases in thickness toward an end portion of the excitation electrode.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
B06B 1/06 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
An AT-cut crystal element includes a crystal element having two side surfaces (namely, a Z′-surface) intersecting with a Z-axis of a crystallographic axis thereof. At least one of the two side surfaces is constituted of three of first to third surfaces. The first to the third surfaces meeting following conditions: the first to the third surfaces intersect with one another in this order and formed by rotating a principal surface of the crystal element by predetermined angles; and expressing the angle of the first surface as θ1, a length of the first surface as D, a thickness of a part of the crystal element having the principal surface as t, and M=D/t, and a conversion percentage as fn (M, (θ1)), the θ1 and the M are set such that the conversion percentage fn (M, (θ1)) becomes a predetermined value Th or less.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
75.
Oscillator for detecting temperature of atmosphere
An oscillator detects a temperature of an atmosphere where a crystal resonator for an oscillation output is placed using a temperature detector to stabilize the temperature by controlling a temperature of a heater based on a temperature detection value. The device includes a buffer amplifier interposed in a signal path of a control signal generated based on the temperature detection value, a heater disposed such that a collector and an emitter position between a power source unit and a ground and constituted of a transistor having a base connected to an output port of the buffer amplifier, and a first differential amplifier disposed to adjust a gain of the buffer amplifier to cancel voltage fluctuation of the power source unit and amplifying a difference between a voltage corresponding to the supply voltage and a preliminarily set voltage to input to a gain adjustment port of the buffer amplifier.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03L 7/08 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop
H03B 5/04 - Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H03L 7/099 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
H03L 7/24 - Automatic control of frequency or phase; Synchronisation using a reference signal directly applied to the generator
H03B 5/36 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
76.
Piezoelectric vibrating piece and piezoelectric device
A piezoelectric vibrating piece includes a vibrating piece body and at least a pair of excitation electrodes. The vibrating piece body includes a vibrator. The pair of excitation electrodes are formed on respective front surface and back surface of the vibrator. The vibrating piece body is a twice rotated quartz-crystal vibrating piece cut out parallel to an X″-Z″ surface. The X″-Z″ surface is rotated around a Z-axis of a crystallographic axis of a crystal and further rotated around an X′-axis. The pair of excitation electrodes are collocated in a Z′″-axis direction determined by an X′″-axis. The X′″-axis is defined by counterclockwise rotation from a +X″-axis direction around a Y″-axis by 260° to 300°. The pair of excitation electrodes are disposed inclined with respect to the Y″-axis direction.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
During normal and reverse swings of a transducer main body, an engagement accuracy is ensured to reduce generation of vibration and noise. An ultrasonic transducer includes: a coupling swingably and loosely fitted between one end portion of an output shaft of a power source that swings the transducer main body and the transducer main body, and a flywheel swingably and loosely fitted to another end portion of an output shaft of the power source, ensuring the reduced vibration and noise from the transducer main body.
A61B 8/12 - Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
F16D 3/68 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts the elements being made of rubber or similar material
A61B 8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
A crystal unit includes an AT-cut crystal element and a container. The AT-cut crystal element has an approximately rectangular planar shape. The AT-cut crystal element includes a first inclined portion, second inclined portions, and a first secured portion. The first inclined portion is inclined such that the crystal element decreases in thickness from a proximity of the first side to the first side. The second inclined portions are disposed on respective both ends of the first side, the second inclined portions being formed integrally with the first inclined portion. The second inclined portions are inclined gentler than the first inclined portion. The first secured portion and a second secured portion are formed integrally with the second inclined portion. The first secured portion and the second secured portion each project out from the first side to outside the crystal element to be used for securing with the securing members.
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
A crystal unit includes an AT-cut crystal element, excitation electrodes, extraction electrodes. The AT-cut crystal element has an approximately rectangular planar shape. The excitation electrodes are disposed on front and back of principal surfaces of the AT-cut crystal element. The extraction electrodes are extended from the excitation electrodes to a side of one side of the AT-cut crystal element via a side surface of the AT-cut crystal element. Assuming that an extraction angle of the extraction electrode from the principal surface to the side surface is defined as an angle θ with respect to an X-axis of a crystallographic axis of a crystal, the angle θ is equal to or greater than 59 degrees and equal to or less than 87 degrees.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 9/13 - Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
An oven controlled crystal oscillator that ensures reduced heat influence from outside to further stabilize an output frequency is provided. The oven controlled crystal oscillator includes a substrate secured above a base. The oven controlled crystal oscillator includes an oscillator circuit, a heater resistor, and a power transistor, which are mounted on the substrate. The oven controlled crystal oscillator includes pins that secures the substrate above the base at a predetermined interval, a metal cover that covers the oscillator circuit, the heater resistor, and the power transistor, and a resin cover that covers outside of the metal cover. An air layer is formed between the metal cover and the resin cover.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H03L 1/04 - Constructional details for maintaining temperature constant
Providing an OCXO having a highly stabilized output frequency. In an oscillator, which is an OCXO, crystal resonators, oscillator circuits, a temperature detector, and a heater circuit are disposed inside a first container, which is supported in a state of floating inside a second container, while a voltage stabilizer circuit for stabilizing a supply voltage supplied to the heater circuit is disposed apart from the first container inside the second container. Therefore, the supply voltage supplied to the heater circuit is stabilized. The voltage stabilizer circuit is less likely to be affected by heat generation of the heater circuit, thus obtaining a stable oscillation frequency output regardless of the environmental temperature.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H03L 1/04 - Constructional details for maintaining temperature constant
H03L 7/08 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop
H03L 7/24 - Automatic control of frequency or phase; Synchronisation using a reference signal directly applied to the generator
An oscillator includes a front side voltage divider, a rear side voltage divider, and an oscillation unit. The front side voltage divider includes a first resistor connected between a first and second potential sources, and a first output terminal configured to changeably connect to a connection position in the first resistor so as to vary an obtained output voltage. The rear side voltage divider includes a second resistor connected between the first output terminal and a third potential source; and a second output terminal configured to changeably connect to a connection position in the second resistor so as to vary an obtained output voltage. The oscillation unit includes a variable capacitance element with a capacitance varied according to the output voltage from the second output terminal. The oscillation unit varies an output frequency based on a variation in a resonance point associated with a variation in the capacitance.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03B 5/04 - Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H03L 1/00 - Stabilisation of generator output against variations of physical values, e.g. power supply
H03B 5/36 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
The purpose of the present invention is to provide an oscillation device capable of outputting a frequency signal that accurately reflects the result of temperature adjustment by a heater circuit. An oscillation device 1A outputs a frequency signal of a preset frequency, a crystal oscillator 10a connected to an oscillation circuit 1 is housed in an oscillator cover 111, and the crystal oscillator 10a is disposed above a substrate 31 within a container 41 by soldering the oscillator cover 111 onto the substrate 31 within the container 41. A heater circuit 50 adjusts the temperature within the container 41 on the basis of a temperature detected by a temperature detection unit 53. In this case, the oscillator cover 111 housing the crystal oscillator 10a is formed from phosphorous deoxidized copper.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
84.
Crystal oscillator and method of manufacturing crystal oscillators
An crystal resonator includes a first oscillating circuit that oscillates a crystal resonator at a first frequency, a first impedance adjusting circuit that adjusts an impedance of a first oscillating system including the crystal resonator and the first oscillating circuit, a second oscillating circuit that oscillates the crystal resonator at a second frequency that is different from the first frequency, a second impedance adjusting circuit that adjusts an impedance of a second oscillating system including the crystal resonator and the second oscillating circuit, and a controlling circuit that controls the first impedance adjusting circuit and the second impedance adjusting circuit.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03L 1/02 - Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
H03H 9/24 - Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive
H03B 5/36 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
Provided is a novel AT cut quartz piece in which unnecessary vibration other than vibration originating from an AT cut quartz vibrator can be suppressed, and the impedance of the vibrator improved, in comparison with the prior art. The two side surfaces that intersect with the Z’ quartz crystal axis are configured with three surfaces: a first surface 11a, which is the m surface of the quartz crystal; a second surface 11b, which meets with the first surface but is not the m surface; and a third surface, which meets with the second surface 11b, but is not the m surface. Also, the second surface 11b corresponds to a surface in which the main surface 11d of the AT cut quartz piece is rotated –74±3° about the X-axis of the quartz crystal as a rotation axis, and the third surface 11bc corresponds to a surface in which the main surface 11d is rotated –56±3° about the X-axis of the quartz crystal as a rotation axis.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
The present invention suppresses interference between wiring patterns in an oscillator that outputs multiple oscillation signals. An oscillator 1 is provided with: an IC 20 capable of outputting multiple oscillation signals using a crystal oscillator 10; and a substrate unit 31 connected to the IC 20. The substrate unit 31 has: an oscillator land 32a and an oscillator land 32e, which are electrically connected to the crystal oscillator 10; a power supply land 32c, which is electrically connected to a power supply; and a first output land 32b, which is positioned between the oscillator land 32a and the power supply land 32c, and which externally outputs a first oscillation signal from the IC 20. The wiring pattern 33b from the first output land 32b passes between the oscillator land 32a and the oscillator land 32e.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
87.
At-cut crystal element, crystal resonator and crystal unit
An AT-cut crystal element is provided. The AT-cut crystal element includes side surfaces intersecting with a Z′-axis of a crystallographic axis of a crystal. At least one side surface of the side surfaces is constituted of three surfaces of a first surface to a third surface. Besides, a crystal resonator including the AT-cut crystal element, and a crystal unit including the crystal resonator are provided.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
The objective of the present invention is to provide a sensing sensor 2 and a sensing device with which it is possible to restrict a deterioration in measurement sensitivity, and to detect or quantify a sensing target. A supply solution flows from a filler opening 23 through a flow path 57 on one surface side of a crystal oscillator 4, to an effluent flow path 53, and a sensing target contained in the supply solution is adsorbed onto an adsorption film 48 provided on the crystal oscillator 4. Further, after rising through the effluent flow path 53 as a result of the hydraulic pressure of the supply solution introduced into the filler opening 23, the supply solution is absorbed by means of an outlet side capillary member 56. When the amount of supply solution on the filler opening side decreases, the hydraulic pressure decreases and it becomes difficult for the supply solution to rise through the effluent flow path 53, thereby forming a state in which the supply solution that is absorbed and pulled into the outlet side capillary member 56 is separated from the supply solution on the flow path 57 side. Thus, even if a buffer solution is supplied to the sensing sensor before the sample solution to be sensed is supplied as the supply solution, dilution of the sample solution as a result of inflow of the buffer solution can be restricted, and a deterioration in the measurement sensitivity can be suppressed.
G01N 5/02 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
14 - Precious metals and their alloys; jewelry; time-keeping instruments
19 - Non-metallic building materials
Goods & Services
Biosensors for inspection of environmental pollution; biosensors for food inspection; wireless modules; modules for telecommunication machines and apparatus; crystal units for electric or magnetic meters and testers; crystal units for telecommunication machines and apparatus; crystal units for electronic machines and apparatus; crystal oscillators for electric or magnetic meters and testers; crystal oscillators for telecommunication machines and apparatus; crystal oscillators for electronic machines and apparatus; crystal filters for electric or magnetic meters and testers; crystal filters for telecommunication machines and apparatus; crystal filters for electronic machines and apparatus; surface acoustic wave devices for electric or magnetic meters and testers; surface acoustic wave devices for telecommunication machines and apparatus; surface acoustic wave devices for electric or magnetic meters and testers; surface acoustic wave devices for telecommunication machines and apparatus; surface acoustic wave devices for electronic machines and apparatus; surface acoustic wave devices; angular rate sensors; gyro sensors; pneumatic sensors; oil sensors; parts of measuring or testing machines and instruments; measuring or testing machines and instruments; fuel cells; batteries and cells; crystal wavelength plates; crystal birefringent plates; optical components and their parts; intercom; telephone sets; telephone apparatus; data transmission cable machines and apparatus; submarine repeaters; transmission machines and apparatus (for telecommunication); set-top box for cable television; facsimile machines; wire communication machines and apparatus; television receivers (TV sets); television transmitters; BS digital tuners; terrestrial digital tuners; broadcasting machines and apparatus; machines and apparatus for telecommunication network namely personal computer communication, Internet, etc; machines and apparatus for mobile phone and PHS terminals; machines and apparatus for fixed communications; relay station for mobile phone and PHS; keyless entry system; automobile telephone; vehicular radio communication machines and apparatus; aeronautical radio communication machines and apparatus; multichannel radio communication machines and apparatus for fixed stations; single-channel radio communication machines and apparatus for fixed stations; communication machines and apparatus for satellite-borne use; communication machines and apparatus for satellite communications terrestrial stations; wireless communication machines and apparatus; navigation apparatus for vehicles (on-board computers); home security machines and apparatus; automatic electric shutter openers; wireless application machines and apparatus; audio frequency machines and apparatus; digital cameras; videocameras (camcorders); DVD; video frequency machines and apparatus; crystal units; crystal oscillators; crystal filters; saw (surface acoustic wave) filters, namely, electromechanical devices used in radio frequency applications; duplexers; diplexers; low noise amplifiers; power amplifiers; front-end modules for telecommunication machines and apparatus; antennas (aerials); parts and accessories for telecommunication machines and apparatus; telecommunication machines and apparatus; electric buzzers; ozonisers (ozonators); electrolyzers (electrolytic cells); egg-candlers; cash registers; coin counting or sorting machines; electric sign boards for displaying target figures, current outputs or the like; photo-copying machines; manually operated computing apparatus; time and date stamping machines; time clocks (time recording devices); punched card office machines; voting machines; billing machines; coin-operated gates for car parking facilities; life saving apparatus and equipment; fire extinguishers; fire hose nozzles; sprinkler systems for fire protection; fire alarms; gas alarms; anti-theft warning apparatus; protective helmets; railway signals; vehicle breakdown warning triangles; luminous or mechanical road signs; diving machines and apparatus; vehicle drive training simulators; sports training simulators; laboratory apparatus and instruments; photographic machines and apparatus; cinematographic machines and apparatus; optical apparatus and instruments; power distribution or control machines and apparatus; rotary converters; phase modifiers; electric or magnetic meters and testers; electric wires and cables; magnetic cores; resistance wires; electrodes; fire boats; fire engines; gloves for protection against accidents; dust masks; gas masks; welding masks; fireproof garments; spectacles (eyeglasses and goggles); electronic circuits and CD-ROMS recorded programs for handheld games with liquid crystal displays; weight belts (for scuba diving); protective helmets for sports; air tanks (for scuba diving); regulators (for scuba diving); phonograph records; metronomes; electronic circuits and CD-ROMS recorded automatic performance programs for electronic musical instruments; slide-rules; exposed cinematographic films; exposed slide films; slide film mounts; recorded video discs and video tapes; electronic publications; ultrasonic transducers; contact medium of transducers for ultrasound diagnosis; parts and fittings of ultrasonic transducer; parts and fittings of contact medium of transducers for ultrasound diagnosis. Biosensors for medical purposes; catheter and probe; diagnostic apparatus and instruments; sensing machines and apparatus for medical purpose; machines and apparatus of analytic test for medical purpose; parts and fittings of catheter and probe; parts and fittings of diagnostic apparatus and instruments; parts and fittings of sensing machines and apparatus for medical purpose; parts and fittings of machines and apparatus of analytic test for medical purpose; electrodes for medical purpose; pacifiers for babies; ice bag pillows (for medical purposes); triangular bandages; supportive bandages; surgical catguts; feeding cups (for medical purposes); dropping pipettes (for medical purposes); teats; medical ice bags; medical ice bag holders; baby bottles; vacuum bottles for nursing; finger guards (for medical purposes); contraceptives (apparatus); artificial tympanic membranes; prosthetic or filling materials (not for dental use); esthetic massage apparatus for industrial purposes; medical machines and apparatus; electric massage apparatus for household use; gloves for medical purposes; urinals (for medical purposes); bed pans; ear picks. Precious metals; keyrings (trinkets or fobs); jewel cases of precious metal; trophies (prize cups); commemorative shields; unwrought and semi-wrought precious stones and their imitations; shoe ornaments of precious metal; clocks and watches; clock oscillators. Synthetic quartz crystal; synthetic quartz crystal (unwrought).
90.
GEIGER-MÜLLER COUNTER AND RADIATION MEASURING METER
The objective of the present invention is to provide a Geiger-Müller counter and a radiation measuring meter with which stable radiation measurement can be performed, and having a high β-ray measuring sensitivity. This Geiger-Müller counter (100) is provided with: an enclosed tube (110) having a hermetically sealed space; an anode (120) which is disposed inside the space and is formed in the shape of a flat plate; a cathode (130) which is formed in the shape of a flat plate and is disposed inside the space, parallel to the anode, a prescribed distance from the anode; and an inert gas and a quenching gas which are hermetically sealed inside the space.
A solder material includes an alloy of at least five elements including Sn, Cu, Sb, and In, and 20 mass % or less of Ag. The solidus temperature of the solder material is higher than 290° C., the liquidus temperature of the solder material is 379° C. or less and is higher than the solidus temperature, and the temperature difference between the liquidus temperature and the solidus temperature is 70° C. or less.
Provided is a technique for measuring with high reliability when sensing an object to be sensed in a sample solution on the basis of frequency variations of a crystal resonator (4). A sensing method causes the object to be sensed to adhere to the crystal resonator (4) to measure the amount of an object to be sensed according to frequency variations based on the result of the addition of mass, wherein an oscillation frequency measurement is taken before the measurement region is set as a liquid phase and thereafter the sample solution is supplied to the measurement region. Thereafter, the liquid components in the measurement region are removed and the oscillation frequency is measured as a gas phase so as to measure the difference in frequency with the oscillation frequency before supplying the sample solution to the measurement region. Therefore, because the piezoelectric resonator oscillates in the gas phase, an error in the oscillation frequency or a reduction in the variation amount of the oscillation frequency caused by the crystal resonator (4) coming into contact with the liquid phase, is suppressed and the object to be sensed can be sensed with high accuracy.
G01N 5/02 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
[Problem] To provide a crystal oscillator that can be fitted with a small and simple-structured support part without adversely affecting an oscillation characteristic, and that has an excellent frequency-temperature characteristic with a high degree of design flexibility. [Solution] Crystallographic X-axis, Y-axis, and Z-axis of a crystal are rotated by -65° to -50° about the X-axis and defined as an X'-axis, a Y'-axis, and a Z'-axis, respectively, and the X'-axis and the Z'-axis are rotated by 40° to 50° about the Y'-axis and defined as an X"-axis and a Z"-axis, respectively. With reference to a reference rectangle which is a rectangle having sides parallel to the X"-axis and the Z"-axis, the crystal oscillator uses a crystal plate 31 that has a shape obtained by expanding at least a pair of opposite sides of the reference rectangle toward the outside of the reference rectangle, and that has longitudinal oscillation modes in the X"-direction and the Z"-direction.
H03H 9/19 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
Provided is a frequency synthesizer capable of high-speed switching and having few unwanted frequency components in the output frequency signal. In this frequency synthesizer (1), a direct digital synthesizer (DDS) (2) operating on the basis of a clock signal generates a reference frequency signal having a prescribed reference frequency, and clock signal supply units (41, 42) are switched to supply clock signals having a different clock frequency to the DDS (2). A storage unit (12) stores, in association with the output frequency (fVCO) from the frequency synthesizer (1), combinations of clock frequencies (fclk), reference frequencies (fc), and division numbers (N) for which spurious frequencies do not exist within a preset frequency range and the division number of a variable frequency divider (302) provided in a PLL circuit (3) is the smallest when the DDS (2) is operated by switching the clock signal. Setting units (11, 24) read the setting items stored in the storage unit (12), and perform settings in each unit.
H03L 7/18 - Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
96.
PIEZOELECTRIC DEVICE AND METHOD FOR MANUFACTURING SAME
[Problem] To acquire a low-cost piezoelectric device with a simple configuration that allows mounting terminals to be formed at a desired position. [Solution] A piezoelectric device includes: lead-out wires (3) provided on the outer periphery of a piezoelectric substrate (1) and connected to interdigital electrodes (2) formed on a principal surface of the piezoelectric substrate (1); an outer surrounding wall layer (6) provided around the outer periphery of the piezoelectric substrate including the lead-out wires, said outer surrounding wall layer (6) forming a hollow part as an operation space for the interdigital electrodes; and a ceiling board (7) bridging the outer surrounding wall layer to seal the hollow part. The ceiling board (7) is composed of a heat resistant resin having a mechanical strength increased by a filler made of an inorganic material mixed therewith. The lead-out wires (3) are formed on a pair of opposing side surfaces of the outer surrounding wall layer. A metal plating layer is formed into a plurality of insulated segments over the pair of opposing side surfaces of the outer surrounding wall layer (6), the upper surface of the ceiling board (7) that is connected to the pair of opposing side surfaces of the outer surrounding wall layer (6), and the outer periphery of the piezoelectric substrate (1) that is connected to the pair of opposing side surfaces of the outer surrounding wall layer (6). The metal plating layer is electrically connected to the lead-out wire (3) on the outer periphery of a piezoelectric substrate (1). The metal plating layer on the upper surface of the ceiling board works as a mounting terminal (11) while the metal plating layer on the side surface of the outer surrounding wall layer works as a side wire (10) for connecting the lead-out wires and the mounting terminals.
H03H 9/25 - Constructional features of resonators using surface acoustic waves
H03H 3/08 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves
Provided are a detection sensor and detection device with which the height of a supply space for a sample solution is lowered and the sensitivity of measurement of an object to be detected can be improved. In the present invention, to one surface side of a crystal oscillator 4 in which an adsorption film 46 for adsorbing an object to be detected is provided to an excitation electrode 42A, a flow path 57 going along the one surface side of the crystal oscillator 4 from one end side to the other end side is formed by causing an upper cover body 21 to press a flow path formation member 5. A recess 84 is provided to the flow path formation member 5 on the surface thereof opposite the flow path 57 at a position facing the flow path 57, and/or to a flow path formation member in a pressing member on the surface thereof opposite a flow path at a position facing the flow path 57. As a result, even if there is strain in the pressing member, deformation of the flow path 57 is suppressed when the flow path formation member 5 is pressed. A sample solution will therefore flow stably through the flow channel 57, thus improving the sensitivity of measurement.
G01N 5/02 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
98.
PIEZOELECTRIC DEVICE, PIEZOELECTRIC DEVICE MANUFACTURING METHOD, AND ELECTRONIC COMPONENT
[Problem] To suppress generation of failure products by ensuring the strength of a ceiling material by maintaining the thickness of the ceiling material, and by reliably bonding a piezoelectric device and a mounting substrate to each other. [Solution] A piezoelectric device 10 has: an acoustic surface wave element 12 formed on a piezoelectric substrate 11; a rib material 13 bonded on the piezoelectric substrate 11 by surrounding the acoustic surface wave element 12; and a board-like ceiling material 14 bonded to the rib material 13 such that an opening O of the rib material 13 is covered with the ceiling material. The ceiling material 14 is formed such that an area S2 of a second surface 14b on the side opposite to the rib material 13 is smaller than an area S1 of a first surface 14a bonded to the rib material 13.
H03H 9/25 - Constructional features of resonators using surface acoustic waves
H03H 3/08 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves
The present invention provides a neutral density filter having excellent wavelength flatness. The neutral density filter (100) comprises an optical substrate (110) and a light absorption film (120) formed on a surface of the optical substrate, wherein the light absorption film comprises first light absorption films (122, 126) which have an attenuation coefficient that becomes higher as the wavelength of transmitted light becomes longer and a second light absorption film (124) which has an attenuation coefficient that becomes lower as the wavelength of transmitted light becomes longer.
Provided is a technique for suppressing the aging of oscillation frequency and obtaining a stable oscillation output in an oscillation device using a piezoelectric oscillator. In an OCXO 1 for outputting an oscillation frequency by oscillating a crystal oscillator, the corresponding relationship between an oscillation frequency and an elapsed time is obtained in an initial time after a first crystal oscillator 11 starts to oscillate. Based on the obtained result, data according to the following corresponding relationship between the accumulated elapsed time of the oscillation after the start of the oscillation and the oscillation frequency is obtained. A frequency setting value is then corrected on the basis of the accumulated elapsed time of the oscillation and this data. The output frequency of the first crystal oscillator 11 varies with elapsed time, but is corrected by a frequency correction value according to the accumulated elapsed time, so that the oscillation frequency becomes stable.
H03B 5/32 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
H03L 7/00 - Automatic control of frequency or phase; Synchronisation
