94 GHz 4 Rx, 1 Tx FMCW Radar System

This paper describes a 94 GHz FMCW radar system for unmanned vehicles using 1 Tx and 4 RX chips designed in 65-nm CMOS process. The measured output power of the transmitter conversion gain receiver were 9.77 dBm 26 dB, respectively. simulated noise figure chip was 8 dB. Rx antennas microstrip patch with 11 dBi on Duroid substrate. chirp period sawtooth waveform 50 μs. baseband signal bandpass-filtered passband dB sampled at rate MSPS 14-bit ADC. ADC acquired an FPGA. distance angle information target calculated FFT-based algorithm. processed results closely matched based specifications TRx processing gain, which confirmed validity developed system.