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