AM to PM noise conversion in a cross-coupled quadrature harmonic oscillator

Torsten Djurhuus, Viktor Krozer, Jens Vidkjær, Tom Keinicke Johansen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We derive the dynamic equations governing the cross-coupled quadrature oscillator, perturbed by noise, leading to an expression for the close-in phase noise. The theory shows that a nonlinear coupling transconductance results in AM-PM noise conversion close to the carrier, which increases with the coupling strength. A simple linear time-domain model is employed to illustrate the results
Original languageEnglish
JournalInternational Journal of R F and Microwave Computer-Aided Engineering (Print Edition)
Volume16
Issue number1
Pages (from-to)34-41
ISSN1096-4290
Publication statusPublished - 2006

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