A 60 GHz Fully Integrated Low-IF CMOS Radar Transceiver with −6 dBm IP1dB and −14 to 5 dBm Power Control for Ultra-Short-Range Applications

This work presents a 60 GHz fully integrated low-IF transceiver (TRX) for ultra-short-range (USR) FMCW radars, fabricated in a 28-nm FD-SOI CMOS process. This radar TRX includes a front-end, an ABB stage, a chirp generator, and a loopback test circuit. It offers a wide transmitter output power dynamic range from −14 to 5 dBm to optimize the receiver SNR for various scenarios of interest. Additionally, it provides a input 1 dB compression point of −6 dBm to handle strong spillover signals through a HPF-first ABB, and a noise figure of 16.6 dB at 115 kHz IF. The chirp generator based on a two-point modulation demonstrates high linearity of 164 kHz (0.0027%) at a wide bandwidth of 6 GHz. The compact design occupies a core area of only 2.5 mm2 and consumes DC power of 147 mW, making it suitable for mobile device-based solutions.