DOI: 10.1109/TMTT.2026.3682175   IEEEXplore: https://ieeexplore.ieee.org/document/11483145

A dual-band, 2TX–4RX frequency-modulated continuous-wave (FMCW) radar in a non-uniform linear array (NULA) fabricated in 65-nm CMOS.

23-27 GHz and 69-81 GHz

Phase-synchronized frequency conversion with an onboard NULA enables joint dual-band operation and mitigates the field-of-view (FoV) and angular resolution tradeoff. Phase dithering, two or three times, suppresses grating lobes as much as 14 dB to narrow the angular resolution.

Millimeter-wave FMCW radars for short-range sensing in advanced driver-assisted systems (ADAS).

6.1◦ and 5.1◦ angular resolution by deploying two- and three-time phase dithering, respectively; 1.6 cm range resolution. 10.1 / 8.1 dBm TX output power (fundamental/harmonic); 4 / 12 GHz modulated bandwidth. -5 / -4 dBm RX intercept point (IP1dB); 10.7 / 19.4 dB RX noise figure (NF); 1.87 array efficiency. 3.1 mm2 area; 972 mW combined power consumption of the 2TX–4RX radar chiplet.