A 54-64.8 GHz Subharmonically Injection-Locked Frequency Synthesizer with Transmitter EVM between -26.5 dB and -28.8 dB in 28 nm CMOS
Host Publication: 43rd European Solid-State Circuits Conference
Authors: C. Tsai, G. Mangraviti, Q. Shi, K. Khalaf, B. André and P. Wambacq
Publication Year: 2017
Number of Pages: 4
The 60 GHz frequency synthesizer presented here demonstrates a transmitter error vector magnitude (EVM) between -28.8 and -26.5 dB, from 54 to 64.8 GHz, in 28 nm digital CMOS technology. This is suitable for IEEE 802.11 communications with coded datarates up to 6.4 Gb/s. Its architecture, based on subharmonic injection locking, is immune to pulling by the power amplifier. A 24 GHz phase-locked loop, designed for low phase noise, locks a 60 GHz quadrature oscillator. The phase noise of the resulting 60 GHz carrier is between -96.5 and -93.8 dBc/Hz at 1 MHz offset. The frequency synthesizer, consuming 107 mW, is integrated and demonstrated with a 60 GHz transmitter front end.