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该论文提出了一款采用28nm CMOS工艺的145GHz FMCW雷达收发器，通过片上天线和13GHz射频带宽实现了11mm的距离分辨率，并利用外部16.1GHz线性调频信号经两级三倍频器上变频至145GHz，解决了高频雷达系统的高分辨率测距和MIMO角分辨率问题。
require a high range resolution. This paper presents a 145GHz FMCW radar transceiver with on-chip antennas in 28nm bulk CMOS. An RF bandwidth of 13GHz yields an 11mm range resolution, and the high RF carrier permits greater velocity and MIMO-angular resolution. An external chirp signal at 16.1GHz is upconverted to 145GHz via a cascade of two frequency triplers in the RX and TX. For MIMO operation, a central chirp signal from a sub-sampling PLL integrated in 28nm CMOS [1] is distributed to multiple TRX chips on a PCB, eliminating mm-wave signal routing. The radar operates over a 0.15-to-10m range using fast sawtooth chirps of 5-to-50μs duration. The beat frequency at IF fits between 400kHz and 15MHz. The on-chip TX leakage produces a strong beat near DC, suppressed via
Akshay Visweswaran, Kristof Vaesen, Siddhartha Sinha, Ilja Ocket,
Miguel Glassee, Claude Desset, Andre Bourdoux, Piet Wambacq imec, Leuven, Belgium Indoor radar applications detecting people, vital signs and minute gestures