A SiGe-Based 140-GHz Four-Channel Radar Sensor with Digital Beamforming Capability

Description

This paper presents a multi-channel radar sensor operating at 140 GHz. The sensor employs fundamental-wave SiGe-based chips that feature HBTs with 340-GHz ƒmax. A separate voltage-controlled oscillator chip provides the LO signal with frequencies from 136 to 150GHz for four cascaded transceiver chips. The saturated transceiver output power is approximately 4 dBm, the maximum receiver gain is 19.5 dB, and the minimum double-sideband noise figure is 13.5 dB. The equivalent isotropically radiated power of a single channel is 5 dBm. The sensor was field-tested with frequency-modulated continuous-wave chirps from 140 to 145 GHz. Targets were resolved in range and angle by means of digital beamforming.

Period	20 Jun 2012
Event title	Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International
Event type	Conference
Location	CanadaShow on map