DOI: 10.1109/TMTT.2023.3315792   IEEEXplore: https://ieeexplore.ieee.org/document/10264109

4-channel Ka-band phased array dual mode radar and communications transceiver with 6-bit phase control and 4-bit gain control in 65 nm CMOS with 16.2 mm2 chip area.

28.7–36.2 GHz, Ka-band

1) Direct conversion architecture for building block reuse in both radar and communications modes; 2) Dual-function co-design realized by innovations such as current-flipping bidirectional active mixer to enhance SNDR, true-time-delay variable TL-PS with a tiling structure, pseudo-stacked PAs for high linearity and saturated output power, and a wideband baseband buffer.

Radar and communications integrated wireless systems.

22.2/34.7 dB peak Tx/Rx gain; 19.9 dBm saturated power out, 17.4 dBm OP1 dB; 4.8 dB minimum RX noise figure; -31.5 dBm IP1 dB; 7.5 GHz RF bandwidth, 3.5 GHz analog baseband bandwidth; cm-level 1-D/2-D sensing, 400-Msym/s 64QAM OTA wireless link.