An Energy Efficient 56-Gb/s D-band Point-to-point Link based on CMOS TX and RX Modules and Transmitarray Beamformers

This paper presents an energy-efficient transmitter and receiver system based on multi-channel integrated circuits in CMOS 45 nm technology, in-package antenna feeds and high directivity planar lenses beamformers. Data-rates up to 56 Gb/s are demonstrated over a 1 m point-to-point link using a full-digital communication system. The active circuits integrate multi-LO generators for implementing a channel-aggregation architecture that provides a large RF bandwidth using a significantly narrower baseband interface bandwidth. The energy consumption of the overall RF system is only 33 pJ/bit.