22.2 A 300GHz-Band Phased-Array Transceiver Using Bi-Directional Outphasing and Hartley Architecture in 65nm CMOS

This paper presents a CMOS bi-directional phased-array transceiver that covers the frequency range from 242 to 280GHz. The array consists of 4 elements with beamforming ability in the H-plane of the on-PCB Vivaldi antennas. The LO phase-generation scheme enables two different architectures for TX and RX modes. The TX mode utilizes an outphasing architecture while the Hartley architecture is adopted in the RX mode. The maximum achieved baud rates in the TX mode and the RX mode are 26Gbaud and 18Gbaud, respectively.