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Phase noise analysis and design of a 3-GHz bipolar differential colpitts VCO

Author

Summary, in English

This paper presents a low-phase-noise differential bipolar Colpitts VCO, implemented in a 0.35/spl mu/m BiCMOS process. A time-variant phase noise analysis yields closed- form symbolic expressions for the dominant noise sources in the 1/f/sup 2/ phase-noise region. Measurements show a phase noise of -123 dBc/Hz at 1MHz offset from a 2.8-3.1 GHz carrier, for a figure-of-merit of 183 dBc/Hz. A very good agreement between the derived theoretical formulas, spectreRF simulations, and measurements is observed.

Publishing year

2005

Language

English

Pages

391-394

Publication/Series

Proceedings of the 31st European Solid-State Circuits Conference, 2005. ESSCIRC 2005.

Document type

Conference paper

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Status

Published

ISBN/ISSN/Other

  • ISBN: 0-7803-9205-1