← 返回 JSSC 论文列表JSSC 2022第12期RF & Wireless65nmRadar
A 140-GHz FMCW TXRX-Antenna-Sharing Transceiver With Low-Inherent-Loss Duplexing
提出一种140GHz FMCW雷达收发器，采用天线共享和全双工技术解决波束对准问题。
140GHz FMCW, 25.2dBm EIRP, 6.2dBm总辐射功率, 20.2dB SSB NF, 33.3dB TX-RX隔离度
毫米波雷达FMCW天线共享全双工自干扰消除
▸创新点1：TX/RX天线共享技术通过几何对称和圆偏振实现全双工通信，解决了传统定向耦合器带来的3 dB + 3 dB插入损耗问题，显著提升了系统效率。
▸创新点2：基于圆偏振和几何对称的全双工技术，通过优化天线设计实现了高TX-to-RX隔离度（33.3 dB），同时降低了插入损耗，提升了系统性能。
▸创新点3：自适应自干扰消除(SIC)技术有效抑制了天线失配导致的自干扰，进一步提高了系统信噪比，实测单边带噪声系数(SSB NF)为20.2 dB。
▸创新点4：采用3D打印平面透镜与天线共享技术结合，实现了25.2 dBm的有效全向辐射功率(EIRP)，显著提升了雷达系统的探测能力。
Abstract
This article presents a 140-GHz frequency-
modulated continuous-wave (FMCW) radar transceiver fea-
turing transmit/receive (TX/RX) antenna sharing that address
a TX/RX beam misalignment problem when large-aperture
lenses/mirrors/reflectarrays are used for pencil beam forming.
A full-duplexing technique based on circular polarization and
geometrical symmetry is applied to mitigate the 3 dB + 3 dB inser-
tion loss inherent to conventionally adopted directional couplers,
while still maintaining high