An Analysis of 1/f2 Phase Noise in Bipolar Colpitts Oscillators (With a Digression on Bipolar Differential-Pair LC Oscillators)

A. Fard, Pietro Andreani

Research output: Contribution to journalJournal articlepeer-review

Abstract

This work presents an analysis of phase noise in the $1/f^{2}$ region displayed by both single-ended and differential bipolar Colpitts oscillators. Very accurate and rigorous symbolic phase noise expressions are derived, enabling a deeper insight into the major mechanisms of phase noise generation, and providing new tools for design optimization. Phase noise expressions for the cross-coupled differential-pair LC-tank oscillator are derived as well.
Original languageEnglish
JournalI E E E Journal of Solid State Circuits
Volume42
Issue number2
Pages (from-to)374-384
ISSN0018-9200
DOIs
Publication statusPublished - 2007

Keywords

  • colpitts
  • bipolar
  • phase noise
  • oscillators
  • vcos

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