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  • Research Article
  • Open Access

Modeling and Characterization of VCOs with MOS Varactors for RF Transceivers

  • 1Email author,
  • 2,
  • 1,
  • 3,
  • 1,
  • 2 and
  • 3
EURASIP Journal on Wireless Communications and Networking20062006:093712

  • Received: 1 September 2005
  • Accepted: 17 May 2006
  • Published:


As more broadband wireless standards are introduced and ratified, the complexity of wireless communication systems increases, which necessitates extra care and vigilance in their design. In this paper, various aspects of popular voltage-controlled oscillators (VCOs) as key components in RF transceivers are discussed. The importance of phase noise of these key blocks in the overall performance of RF transceivers is highlighted. Varactors are identified as an important component of LC-based oscillators. A new model for accumulation-mode MOS varactors is introduced. The model is experimentally verified through measurements on LC-based VCOs designed in a standard m CMOS process.


  • Information System
  • Communication System
  • Wireless Communication
  • System Application
  • Phase Noise


Authors’ Affiliations

Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z4
Department of Electrical and Computer Engineering, University of Alberta, Alberta, Edmonton, Canada, T6G 2V4
PMC-Sierra, Burnaby, British Columbia, Canada, V5A 4X1


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© Pedram Sameni et al. 2006

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.