A 90-98 GHz CMOS Transmitter Frontend for Concurrent Phase-Coded FMCW Radar Applications

A 90-98 GHz transmitter frontend fabricated in TSMC 65-nm bulk CMOS, capable of concurrent radar-communications applications is presented. proposed that can be used for phase-coded frequency-modulated continuous wave (PC-FMCW) radar as well data transmission and interference mitigation. The architecture based on an 8-12 IF ×8 frequency multiplication a 10-11 local oscillator (LO). Vector IQ summation provides amplitude phase control, followed by output power amplifier. Two X-band inputs make the attractive radar-communication systems one input multiplied while other not, allowing upconverting modulated signals. achieves full plane supporting high-resolution beam steering with PSAT 13.7 dBm at 94 GHz. consumes 320 mW from 1.2 V supply (VDD) occupies 0.2 mm2 core area. also presents excellent spectral purity >30 dB harmonic rejection conversion gain 28 dB.