A Mm-Wave Gm-Assisted Transformer-Based Matching Network 2x2 Phased-Array Receiver for 5G Communication and Radar Systems

This paper describes a 50-58GHz 2x2 phased-array receiver (RX) for 5G communication and radar systems. The RX utilizes a G _m -assisted matching network (MN) to reduce the noise figure (NF) of a conventional passive mixer-first RX by placing an extra gain of ~5dB prior to the down-conversion mixers with minimal additional components. This prototype phased-array RX integrates a proposed G _m -assisted MN, mixer-first RX with translational feedback, Cartesian phase shifters as a baseband beamformer, poly-phase filters, and LO generation in TSMC 28nm CMOS, occupying a total area of 0.53mm ² . This RX achieves a NF of 7dB, gain of 26dB, input P _1-dB of -20dBm with an 8-GHz 3-dB BW and a S ₁₁ lower than -10dB over 22-GHz BW.