Sige hbt quadrature vco utilizing trifilar transformers

Jin Siang Syu, Chin-Chun Meng, Guo Wei Huang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

A trifllar-coupling quadrature voltage-controlled oscillator (QVCO) is demonstrated using 0.35-|0,m SiGe heterojunction bipolar transistor (HBT) technology. The trifllar transformer consisting of one primary coil and two secondary coils is used in this work to separate the collector and base bias for output voltage swing optimization and also to replace a conventional transistor-coupling method for quadrature output generation, simultaneously. As a result, the trifllar-coupling QVCO achieves the 191.6-dBc/Hz FOM at the supply voltage of 1.2 V. The on-chip passive single side-band (SSB) upconversion mixer is also demonstrated to fairly measure the quadrature accuracy of the QVCO. Consequently, the side-band rejection ratio of 37.7 dB is achieved.

Original languageEnglish
Title of host publicationProceedings of 2008 IEEE Asian Solid-State Circuits Conference, A-SSCC 2008
Pages465-468
Number of pages4
DOIs
StatePublished - 3 Nov 2008
Event2008 IEEE Asian Solid-State Circuits Conference, A-SSCC 2008 - Fukuoka, Japan
Duration: 3 Nov 20085 Nov 2008

Publication series

NameProceedings of 2008 IEEE Asian Solid-State Circuits Conference, A-SSCC 2008

Conference

Conference2008 IEEE Asian Solid-State Circuits Conference, A-SSCC 2008
CountryJapan
CityFukuoka
Period3/11/085/11/08

Keywords

  • Phase noise
  • SiGe heterojunction bipolar transistor (HBT)
  • Trifllar transformer
  • Voltage controlled oscillator (VCO)

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