Research Progress of Millimeter-Wave Bidirectional Transceiver Circuits and Systems

Millimeter-Wave (mm-Wave) phased array technology has garnered significant attention due to its applications in high-data-rate wireless communications, radar, and sensing systems. Traditional phased array beamformers with separate transmit and receive chains face hardware redundancy and scalability limitations. Integrating bidirectional transceiver (Bi-TRX) circuits into mm-Wave phased array systems can improve system performance and efficiency, while reducing power consumption and cost. This paper provides a comprehensive review of the advanced mm-Wave Bi-TRXs integrated circuit (IC) developed in recent years, discussing key bidirectional circuit modules and fully integrated Bi-TRXs.