A low-phase-noise low-power 27-GHz SiGe-VCO using merged-transformer matching circuit technique

Takahiro Nakamura, Toru Masuda, Katsuyoshi Washio, Hiroshi Kondoh

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

12 Citations (Scopus)

Abstract

A 27-GHz voltage-controlled oscillator MMIC (VCO-MMIC), featuring low phase noise of -115 dBc/Hz at a 1-MHz offset frequency and large output power of +3.7 dBm with low DC-power dissipation of 111 mW, was developed using a 0.18-μm SiGe BiCMOS process. A novel mergedtransformer matching circuit, in which an inductor in an oscillation loop is reused as a primary inductor of the transformer, contributes to reducing the DC-power dissipation keeping a large output power. This matching circuit is also effective to suppress the bad influence due to the parasitic capacitance of the transformer. The figure of merit (FOM) of the VCO-MMIC is -187 dB. In our knowledge, this value indicates the best performance in 30GHz class VCO-MMICs fabricated using Si-based technology.

Original languageEnglish
Title of host publicationProceedings of the 2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007
Pages413-416
Number of pages4
DOIs
Publication statusPublished - 2007 Oct 2
Externally publishedYes
Event2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007 - Honolulu, HI, United States
Duration: 2007 Jun 32007 Jun 5

Publication series

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

Other

Other2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007
CountryUnited States
CityHonolulu, HI
Period07/6/307/6/5

Keywords

  • MMIC
  • SiGe
  • Transformer
  • VCO
  • mm-wave

ASJC Scopus subject areas

  • Engineering(all)

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