2019 · 15 citations · 1 references
EngineeringElectrical EngineeringAntennasMicroelectronicsMicrowave EngineeringAntenna ArraysBeamformingHigh-frequency Semiconductor DevicesMicrowave AntennasMicrowave Integrated CircuitsMicrowave Semiconductor DevicesAngular ResolutionArray EfficiencyDie-to-wafer BondingFabricationGan-based High-frequency DevicesPhase ShiftersPhased ArraysSilicon Micromachining
This paper describes the design and demonstration of a 1024 element coded aperture subreflector array, implemented with single-bit phase shifters that utilize GaN HEMTs to modulate signals upon reflection. An active reflect-array enables digital beamforming using a single 235 GHz radar transceiver. Wafer level fabrication and assembly allows large arrays to be tiled up while maintaining reasonable costs.
1