Abstract
This paper presents a single antenna radar sensor with Ku-band radar transceiver IC realized in 0.13 μm CMOS processes. In the radar receiver, a sensitivity time control using a DC offset cancellation feedback loop is employed for constant SNR irrelevant on the distance. To reduce the direct coupled Tx signal to Rx in single antenna radar, stub tuned hybrid coupler is adopted instead of circulator. The measured distance is 8.2 m with horn antenna and metal plate target.
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