A 92.6 % tuning range VCO utilizing simultaneously controlling of transformers and MOS varactors in 0.13 μm CMOS technology

Yusuke Takigawa, Hiroshi Ohta, Qing Liu, Satoshi Kurachi, Nobuyuki Itoh, Toshihiko Yoshimasu

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

24 Citations (Scopus)

Abstract

A novel resonant circuit consisting of transformer-based variable inductors and MOS varactors is proposed to implement an ultra-wideband voltage-controlled-oscillator (VCO). The VCO is designed and fabricated using 0.13 μm CMOS, and fully evaluated on wafer. The VCO IC exhibits a frequency tuning range as high as 92.6 % spanning from 1.2 GHz to 3.27 GHz. The measured phase noise of -120 dBc/Hz at 1 MHz offset from the 3.1 GHz carrier is obtained.

Original languageEnglish
Title of host publicationProceedings of the 2009 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2009
Pages83-86
Number of pages4
DOIs
Publication statusPublished - 2009 Nov 6
Event2009 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2009 - Boston, MA, United States
Duration: 2009 Jun 72009 Jun 9

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
ISSN (Print)1529-2517

Conference

Conference2009 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2009
CountryUnited States
CityBoston, MA
Period09/6/709/6/9

Keywords

  • CMOS
  • VCO
  • Variable inductor
  • Wide-tuning range

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'A 92.6 % tuning range VCO utilizing simultaneously controlling of transformers and MOS varactors in 0.13 μm CMOS technology'. Together they form a unique fingerprint.

Cite this