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

This work presents a 60 GHz fully integrated low-intermediate frequency (IF) transceiver (TRX) for ultra-short-range frequency-modulated continuous-wave (FMCW) radars, fabricated in a 28-nm FD-SOI CMOS process. This radar TRX includes a front-end, an analog baseband (ABB), a chirp generator, and loopback test circuits. 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 an input 1 dB compression point of -6 dBm to handle strong spillover signals through a high-pass filter-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 chirp bandwidth of 6 GHz. The compact design occupies a core area of 2.5 mm² and consumes DC power of 147 mW, making it suitable for mobile device-based solutions.