A 5.8-GHz Phased Array FMCW Doppler Radar Front End for Object Localization and Movement Tracking in 65-nm CMOS

This article presents a fully integrated phased array frequency-modulated continuous-wave (FMCW) Doppler radar in 65-nm CMOS for noncontact object localization and movement tracking. The core 5.8-GHz sensor chip with the size of 2.3 x 1.5 mm provides a peak homodyne structure receiver (RX) array gain of 47 dB and a maximum effective isotropic radiated power (EIRP) of 26 dBm on the transmitter (TX) array output with a maximum FMCW bandwidth of 275 MHz. Two 2 x 4 and 1 x 4 antenna arrays have been implemented for RX and TX units, respectively, utilizing patch antenna elements each with a gain of 8 dBi. The phased array transceiver radar system achieves +/- 50 degrees beam-scanning coverage and object localization from 0.5 up to 6 m away, with movement tracking.