Open Access

Modeling and Characterization of VCOs with MOS Varactors for RF Transceivers

  • Pedram Sameni1Email author,
  • Chris Siu2,
  • Shahriar Mirabbasi1,
  • Hormoz Djahanshahi3,
  • Marwa Hamour1,
  • Krzysztof Iniewski2 and
  • Jatinder Chana3
EURASIP Journal on Wireless Communications and Networking20062006:093712

DOI: 10.1155/WCN/2006/93712

Received: 1 September 2005

Accepted: 17 May 2006

Published: 13 August 2006


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.


Authors’ Affiliations

Department of Electrical and Computer Engineering, University of British Columbia
Department of Electrical and Computer Engineering, University of Alberta


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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.