A D-Band Joint Radar-Communication CMOS Transceiver
Wei Deng, Zipeng Chen, Haikun Jia, Pingda Guan, Taikun Ma, Angxiao Yan, Shiyan Sun, Xiangrong Huang, Guopei Chen, Ruichang Ma, Shengnan Dong, Luqiang Duan, Zhihua Wang, Baoyong Chi
Abstract
A <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$D$ </tex-math></inline-formula> -band joint radar-communication complementary metal–oxide–semiconductor (CMOS) transceiver featuring a dual-function mode multiplexer, a power-combining PA with high output power, a current choking high-gain mixer, a two-point modulation (TPM) frequency-modulated continuous-wave (FMCW) digital phase-locked loop (PLL) with a dual-core DCO, and a wideband I/Q local oscillator (LO) generator is implemented in 28-nm CMOS technology. In the radar mode, the RF front end demonstrates 46-GHz bandwidth (BW), and the on-chip PLL/LO generated FMCW chirp achieves a BW of 30 GHz and a slope of 30 GHz/ <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$50~\mu \text{s}$ </tex-math></inline-formula> . In the communication mode, the transceiver including the analog baseband realizes 20-GHz BW, and the image rejection ratio (IRR) is better than 40 dB. The measured transmitter (TX) saturated output power is 13 dBm, and the output 1-dB compression point (OP1dB) is 8.3 dBm. The measured typical PLL phase noise is −111.3 dBc/Hz at a 1-MHz offset from an 11.69-GHz carrier frequency. The TX-to-RX over-the-air (OTA) modulation–demodulation measurement with QPSK and 16-QAM signals shows the error vector magnitude (EVM) of −16.5 and −19.7 dB, respectively.