Real-Time Short-Range Leakage Cancelation in FMCW Radar Transceivers

Description

Our demonstrator verifies a novel concept to mitigate unwanted close signal reflections in FMCW radar transceivers. In automotive applications, for instance, these reflections originate from the car’s own bumper, causing a severe degradation of detection sensitivity and accuracy due to the unpreventable phase noise contained in the transmit signal. We propose a concept on how to mitigate the so-called Short-Range (SR) leakage in a recently puplished paper in the IEEE Journal of Selected Topics in Signal Processing (December 2015). Therein we introduce an artificial On-Chip Target which enables almost perfect SR leakage signal estimation and cancelation with a minimum amount of chip area. It is thus the first known leakage canceler of its kind that can be realized holistically within a monolithic microwave integrated circuit (MMIC). To prove our theoretical investigations, we built a hardware prototype with discrete components, showing highly convincing measurement results.

Period	23 Mar 2016
Event title	41st IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2016)
Event type	Conference
Location	ChinaShow on map