A sub-harmonic injection-locked frequency synthesizer with frequency calibration scheme for use in 60GHz TDD transceivers

Abstract

A 58.1-to-65.0 GHz frequency synthesizer using sub-harmonic injection-locking technique is presented. The synthesizer can generate all 60GHz channels defined by IEEE 802.15.3c, wirelessHD, IEEE 802.11ad, WiGig, and ECMA-387. A frequency calibration scheme is proposed to monitor frequency shift resulting from environmental variations. Implemented in a 65nm CMOS process, the synthesizer achieves a typical phase noise of -117 dBc/Hz @10MHz offset from a carrier frequency of 61.56 GHz.