2.4-GHz band low-voltage class-C PMOS VCO IC with amplitude feedback loop

Xiao Xu, Xin Yang, Toshihiko Yoshimasu

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

Abstract

A novel 2.4 GHz-band 0.5-V Class-C PMOS VCO IC with an amplitude feedback loop is proposed. The amplitude feedback loop circuit consists of a detector, an invertor and a bias control circuit. The feedback loop automatically changes the bias of LC-VCO and shifts the oscillation mode from initial Class-AB to Class-C in steady-state. The Class-C VCO IC is designed, fabricated and fully evaluated in 180-nm CMOS technology. The fabricated VCO IC has exhibited a measured phase noise of-117.4 dBc/Hz at 1 MHz offset from the 2.25 GHz carrier frequency with a supply voltage of only 0.5-V.

Original languageEnglish
Title of host publication2015 Asia-Pacific Microwave Conference, APMC 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume3
ISBN (Electronic)9781479987658
DOIs
Publication statusPublished - 2016 Feb 18
EventAsia-Pacific Microwave Conference, APMC 2015 - Nanjing, China
Duration: 2015 Dec 62015 Dec 9

Other

OtherAsia-Pacific Microwave Conference, APMC 2015
CountryChina
CityNanjing
Period15/12/615/12/9

Keywords

  • Class-C
  • Feedback Loop
  • LC-VCO
  • Low voltage
  • PMOS

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Xu, X., Yang, X., & Yoshimasu, T. (2016). 2.4-GHz band low-voltage class-C PMOS VCO IC with amplitude feedback loop. In 2015 Asia-Pacific Microwave Conference, APMC 2015 - Proceedings (Vol. 3). [7413483] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APMC.2015.7413483