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该论文提出了一种用于X波段单天线FMCW雷达的单端口双工射频前端,在65nm CMOS工艺中实现。它解决了单天线系统中发射和接收信号的隔离问题,实现了全双工操作。
Frequency-modulated continuous-wave (FMCW) radars can provide high resolution and superior sensitivity for wireless sensing [1-3]. Radar signals, whose frequency increases or decreases linearly with time, are transmitted via an antenna, reflected from an object, and then received through an antenna after a time delay. Therefore, the frequency difference between the transmitted and received signals can define the distance and speed of objects. There are two approaches of interfacing antenna for a FMCW radar, namely two-antenna (i.e. separated-antenna) and single-antenna (i.e. shared-antenna) methods. A singleantenna FMCW radar is more compact, but more difficult to implement than a two-antenna one. On-chip in-band full duplexers (IBFDs) with a self-interference
Yu-Hsien Kao1, Hao-Chung Chou1, Chun-Chieh Peng1, Yu-Jiu Wang2,
Borching Su3, Ta-Shun Chu1 National Tsing Hua University, Hsinchu, Taiwan National Chiao Tung University, Hsinchu, Taiwan 3 National Taiwan University, Taipei, Taiwan 1 2