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A 300GHz 52mW CMOS Receiver with On-Chip LO Generation

Data communication in the 300GHz band has found renewed interest in the past few years. Two reasons can account for this trend. First, the IEEE 802.15.3d standard was established in 2017 for radios in the unallocated frequency band from 252GHz to 322GHz [1]. Second, a number of researchers have demonstrated the viability of such radios in CMOS technology [2]–[5]. For 300GHz transceivers to serve as an attractive complement to WiFi and WiGig, they should perform extensive beam forming so as to overcome the path loss. This point underscores the importance of low power consumption per element. Moreover, high-order modulation schemes require a local oscillator (LO) signal with very low phase noise. Unfortunately, the generation and distribution of LO phases proves extremely power hungry, making the realization of a single-chip 300GHz CMOS data-communication radio a difficult challenge.