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H03D 1/00
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Demodulation of amplitude-modulated oscillations |
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H03D 1/02
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Demodulation of amplitude-modulated oscillations - Details |
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H03D 1/04
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Modifications of demodulators to reduce interference by undesired signals |
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H03D 1/06
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Modifications of demodulators to reduce distortion, e.g. by negative feedback |
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H03D 1/08
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Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements |
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H03D 1/10
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Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements of diodes |
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H03D 1/12
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Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements of diodes with provision for equalising ac and dc loads |
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H03D 1/14
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Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles |
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H03D 1/16
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Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles of discharge tubes |
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H03D 1/18
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Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles of semiconductor devices |
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H03D 1/20
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Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles with provision for preventing undesired type of demodulation, e.g. preventing anode detection in a grid detection circuit |
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H03D 1/22
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Homodyne or synchrodyne circuits |
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H03D 1/24
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Homodyne or synchrodyne circuits for demodulation of signals wherein one sideband or the carrier has been wholly or partially suppressed |
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H03D 1/26
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Demodulation of amplitude-modulated oscillations by means of transit-time tubes |
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H03D 1/28
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Demodulation of amplitude-modulated oscillations by deflecting an electron beam in a discharge tube |
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H03D 3/00
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Demodulation of angle-modulated oscillations |
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H03D 3/02
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal |
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H03D 3/04
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal by counting or integrating cycles of oscillations |
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H03D 3/06
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators |
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H03D 3/08
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of diodes, e.g. Foster-Seeley discriminator |
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H03D 3/10
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of diodes, e.g. Foster-Seeley discriminator in which the diodes are simultaneously conducting during the same half period of the signal, e.g. ratio detector |
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H03D 3/12
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of discharge tubes having more than two electrodes |
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H03D 3/14
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of semiconductor devices having more than two electrodes |
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H03D 3/16
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of electromechanical resonators |
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H03D 3/18
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements |
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H03D 3/20
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements producing pulses whose amplitude or duration depends on the phase difference |
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H03D 3/22
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Demodulation of angle-modulated oscillations by detecting phase difference between two signals obtained from input signal by means of active elements with more than two electrodes to which two signals are applied derived from the signal to be demodulated and having a phase difference related to the frequency deviation, e.g. phase detector |
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H03D 3/24
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Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits |
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H03D 3/26
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Demodulation of angle-modulated oscillations by means of sloping amplitude/frequency characteristic of tuned or reactive circuit |
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H03D 3/28
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Modifications of demodulators to reduce effect of temperature variations |
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H03D 3/30
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Demodulation of angle-modulated oscillations by means of transit-time tubes |
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H03D 3/32
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Demodulation of angle-modulated oscillations by deflecting an electron beam in a discharge tube |
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H03D 3/34
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Demodulation of angle-modulated oscillations by means of electromechanical devices |
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H03D 5/00
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Circuits for demodulating amplitude-modulated or angle-modulated oscillations at will |
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H03D 7/00
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Transference of modulation from one carrier to another, e.g. frequency-changing |
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H03D 7/02
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Transference of modulation from one carrier to another, e.g. frequency-changing by means of diodes |
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H03D 7/04
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Transference of modulation from one carrier to another, e.g. frequency-changing by means of diodes having negative resistance characteristic, e.g. tunnel diode |
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H03D 7/06
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Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes |
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H03D 7/08
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Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes |
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H03D 7/10
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Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes |
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H03D 7/12
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Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes |
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H03D 7/14
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Balanced arrangements |
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H03D 7/16
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Multiple frequency-changing |
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H03D 7/18
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Modifications of frequency-changers for eliminating image frequencies |
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H03D 7/20
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Transference of modulation from one carrier to another, e.g. frequency-changing by means of transit-time tubes |
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H03D 7/22
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Transference of modulation from one carrier to another, e.g. frequency-changing by deflecting an electron beam in a discharge tube |
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H03D 9/00
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Demodulation or transference of modulation of modulated electromagnetic waves |
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H03D 9/02
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Demodulation using distributed inductance and capacitance, e.g. in feeder lines |
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H03D 9/04
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Demodulation using distributed inductance and capacitance, e.g. in feeder lines for angle-modulated oscillations |
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H03D 9/06
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Transference of modulation using distributed inductance and capacitance |
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H03D 11/00
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Super-regenerative demodulator circuits |
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H03D 11/02
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Super-regenerative demodulator circuits for amplitude-modulated oscillations |
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H03D 11/04
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Super-regenerative demodulator circuits for amplitude-modulated oscillations by means of semiconductor devices having more than two electrodes |
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H03D 11/06
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Super-regenerative demodulator circuits for angle-modulated oscillations |
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H03D 11/08
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Super-regenerative demodulator circuits for angle-modulated oscillations by means of semiconductor devices having more than two electrodes |
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H03D 13/00
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Circuits for comparing the phase or frequency of two mutually-independent oscillations |
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H03D 99/00
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Subject matter not provided for in other groups of this subclass |
