A novel time domain noise model for voltage controlled oscillators

Ke Li, Peter Wilson, Reuben Wilcock

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper describes a novel time domain noise model for voltage controlled oscillators that accurately and efficiently predicts both tuning behavior and phase noise performance. The proposed method is based on device level flicker and thermal noise models that have been developed in Simulink and although the case study is a multiple feedback four de- lay cell architecture it could easily be extended to any similar topology. The strength of the approach is verified through comparison with post layout simulation results from a commercial simulator and measured results from a 120 nm fabri- cated prototype chip. Furthermore, the effect of control voltage flicker noise on oscillator output phase noise is also investigated as an example application of the model. Transient simulation based noise analysis has the strong advantage that noise performance of higher level systems such as phase locked loops can be easily determined over a realistic ac- quisition and locking process yielding more accurate and reliable results.
Original languageEnglish
Pages (from-to)97-105
Number of pages9
JournalCircuits and Systems
Volume4
Issue number1
DOIs
Publication statusPublished - 1 Jan 2013

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