We present a study of tail-bias-current 1/ƒ noise upconversion into 1/ƒ3 phase noise for both Colpitts and differential-pair LC oscillators. We focus on the Groszkowski effect, i.e. the shift in oscillation frequency induced by the higher current harmonics flowing into the LC tank of a harmonic oscillator. Quantitative results match very well numerical simulations run with spectreRF, and show that the Groszkowski effect may indeed be a dominant cause of 1/ƒ3 phase noise generation.

On the Bias Noise to Phase Noise Conversion in Harmonic Oscillators Using Groszkowski Theory

BEVILACQUA, ANDREA;
2011

Abstract

We present a study of tail-bias-current 1/ƒ noise upconversion into 1/ƒ3 phase noise for both Colpitts and differential-pair LC oscillators. We focus on the Groszkowski effect, i.e. the shift in oscillation frequency induced by the higher current harmonics flowing into the LC tank of a harmonic oscillator. Quantitative results match very well numerical simulations run with spectreRF, and show that the Groszkowski effect may indeed be a dominant cause of 1/ƒ3 phase noise generation.
2011
Proceedings of the 2011 IEEE International Symposium on Circuits and Systems (ISCAS)
9781424494736
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/176886
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