Fast Chirping 58-64 GHz FMCW Radar Transceiver using D-PROT Multiplier in CMOS 45nm RFSOI for Vital Signs Detection.

This paper presents a 58-64 GHz FMCW radar transceiver for vital sign measurements based on high integer N frequency multiplication. It is implemented in CMOS 45nm RFSOI technology. The FMCW chirp slope can be increased up to 30 $\mathrm{G}\mathrm{H}\mathrm{z}/\mu \mathrm{s}$ thanks to the high multiplication factor of 30. The phase noise is as low as-108 dBc/Hz. Aggressive chirp duty cycling (<300ns start-up time) enables a very low power consumption of 12.3 mW for 100 KHz repetition rate. The radar is used to demonstrate down to 10 $\mu \mathrm{m}$ displacement measurement using 2 GHz FMCW bandwidth to detect human breath and heart rate.