Abstract

Examples disclosed herein relate to a meta-structure based reflectarray for beamforming wireless applications and a method of operation of passive reflectarrays in an indoor environment. The method includes receiving, by a plurality of passive reflectarrays, a Radio Frequency (RF) signal from a source. The method also includes reflecting, by the plurality of passive reflectarrays, the RF signal to generate a plurality of RF beams to a respective target coverage area, in which each of the plurality of RF beams increases a multipath gain along a signal path between a corresponding passive reflectarray to the respective target coverage area.

IPC Classes  ?

• H01Q 15/14 - Reflecting surfaces; Equivalent structures

Abstract

Examples disclosed herein relate to a switchable reflective phase shifter for millimeter wave applications. The switchable reflective phase shifter has a switchable phase shift network with a plurality of switches to activate a plurality of phase subranges in response to a plurality of bias voltages provided by a control module, and a reflective phase shifter to generate phase shifts in a given phase subrange activated by a given switch in the plurality of switches.

IPC Classes  ?

• H01P 1/18 - Phase-shifters
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H01Q 1/32 - Adaptation for use in or on road or rail vehicles

Abstract

Examples disclosed herein relate to an apparatus for attenuation control of a radar signal in a vehicle. The apparatus includes an attenuation control mechanism having at least one property to reduce distortion of a radar signal transmission positioned on a surface of the vehicle, and radiating elements proximate the attenuation control mechanism enabling radiation beams to propagate with reduced distortion.

IPC Classes  ?

• H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
• G01S 13/87 - Combinations of radar systems, e.g. primary radar and secondary radar
• G01S 13/93 - Radar or analogous systems, specially adapted for specific applications for anti-collision purposes

Abstract

The present invention is a metamaterial-based object detection system. An intelligent antenna metamaterial interface (1AM) associates specific metamaterial unit cells into sub-arrays to adjust the beam width of a transmitted signal. The 1AM is part of a sensor fusion system that coordinates a plurality of sensors, such as in a vehicle, to optimize performance. In one embodiment, an MTM antenna structure is probe-fed to create a standing wave across the unit cells.

IPC Classes  ?

• H01Q 3/30 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H01Q 21/06 - Arrays of individually energised antenna units similarly polarised and spaced apart
• H01Q 25/00 - Antennas or antenna systems providing at least two radiating patterns