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An Analysis of 1/f Noise to Phase Noise Conversion in CMOS Harmonic Oscillators

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Author

Summary, in English

We present a study of tail-bias-current 1/f noise upconversion into 1/f(3) phase noise for both CMOS Colpitts and differential-pair LC oscillators. We focus on the incremental Groszkowski effect, i.e., the modulation of the shift in oscillation frequency induced by the higher current harmonics flowing into the LC tank of a harmonic oscillator induced by bias instabilities, as we show that there is no upconversion of 1/f noise into phase noise from the core MOS transistors in either topologies. Quantitative results match very well numerical simulations run with spectreRF, and show that the Groszkowski effect may indeed be a dominant cause of 1/f(3) phase noise generation.

Publishing year

2012

Language

English

Pages

938-945

Publication/Series

IEEE Transactions on Circuits and Systems Part 1: Regular Papers

Volume

59

Issue

5

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • 1/f noise
  • CMOS
  • harmonic oscillator
  • phase noise

Status

Published

ISBN/ISSN/Other

  • ISSN: 1549-8328