A 18.5-to-22.4GHz Class-F₂₃ VCO Achieving 189.1dBc/Hz FoM Without 2nd/3rd-Harmonic Tuning in 65nm CMOS

Tian, Shuo; Liu, Xiaolong

10.1109/ESSCIRC59616.2023.10268771

2023

IEEE 49th European Solid-State Circuits Conference (ESSCIRC)

1930-8833

IEEE 49TH EUROPEAN SOLID STATE CIRCUITS CONFERENCE, ESSCIRC 2023

SEP 11-14, 2023

null,Lisbon,PORTUGAL

345 E 47TH ST, NEW YORK, NY 10017 USA

IEEE

This paper presents a class-F-23 voltage-controlled oscillator ( VCO) to improve the phase noise performance without manual 2nd- or 3rd-harmonic tuning. By leveraging a three-coil transformer, a differential-mode (DM) resonance expansion at 3rd-harmonic frequency is achieved while maintaining the class-F operation. Meanwhile, by utilizing a two-coil transformer-based resonator for the tail filtering, a wideband common-mode (CM) resonance at 2nd-harmonic frequency is realized. Prototyped in 65-nm CMOS process, the proposed VCO achieves a frequency tuning range of 19.1% from 18.5 to 22.4 GHz with 1-MHz offset phase noise from -110.7 to -106.1 dBc/Hz, while consuming 5 mW at 0.5 V. The figure-of-merit (FoM) is 189.1 dBc/Hz, and the chip area is 0.061 mm(2).

Class-F-23 waveform shaping harmonic tuning voltage-controlled oscillator (VCO) CMOS common-mode (CM) differential-mode (DM) low phase noise transformer

First ; Corresponding

English

CPCI-S

Shenzhen Science and Technology Program[JSGG20220831093600001]

Engineering ; Physics

Engineering, Electrical & Electronic ; Physics, Applied

WOS:001088613100033

Web of Science

Southern Univ Sci & Technol, Sch Microelect, Shenzhen, Peoples R China

Tian, Shuo,Liu, Xiaolong. A 18.5-to-22.4GHz Class-F₂₃ VCO Achieving 189.1dBc/Hz FoM Without 2nd/3rd-Harmonic Tuning in 65nm CMOS[C]. 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE,2023.