A 201.8-dBc/Hz-FoMT Octave-Tuning-Range LC-VCO IC with a Self-Shifted Voltage-Controlled Novel Varactor in 45-nm CMOS SOI

Mengchu Fang, Toshihiko Yoshimasu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An octave-tuning-range LC-VCO IC with a novel varactor is presented in this paper. The novel varactor, which is controlled by a single analog voltage, consists of three parallel-connected Inversion-MOS (IMOS)-based varactors, a PMOSFET level shifter, and two NMOSFETs as variable resistors. The control voltage is level shifted and applied to the IMOS-based varactors to widen the capacitance variation. In addition, NMOSFETs acting as variable resistors are employed to further extend the tuning range. The proposed LC-VCO IC is designed, fabricated, and fully evaluated on wafer in 45-nm CMOS SOI technology. The measured tuning range and phase noise of the proposed LC-VCO IC are 74.2% (2.21 GHz to 4.82 GHz) and -140.13 dBc/Hz, respectively. The proposed LC-VCO IC has realized an excellent measured FoMT of 201.8 dBc/Hz under a maximum dc power consumption of only 2.57 mW.

Original languageEnglish
Title of host publication2021 IEEE Asia-Pacific Microwave Conference, APMC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages238-240
Number of pages3
ISBN (Electronic)9781665437820
DOIs
Publication statusPublished - 2021
Event2021 IEEE Asia-Pacific Microwave Conference, APMC 2021 - Virtual, Online, Australia
Duration: 2021 Nov 282021 Dec 1

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
Volume2021-November

Conference

Conference2021 IEEE Asia-Pacific Microwave Conference, APMC 2021
Country/TerritoryAustralia
CityVirtual, Online
Period21/11/2821/12/1

Keywords

  • IMOS
  • LC-VCO
  • RFIC
  • Varactor
  • Wideband

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'A 201.8-dBc/Hz-FoMT Octave-Tuning-Range LC-VCO IC with a Self-Shifted Voltage-Controlled Novel Varactor in 45-nm CMOS SOI'. Together they form a unique fingerprint.

Cite this