Title :
On the bias noise to phase noise conversion in harmonic oscillators using Groszkowski theory
Author :
Bevilacqua, Andrea ; Andreani, Pietro
Author_Institution :
DEI, Univ. of Padova, Padova, Italy
Abstract :
We present a study of tail-bias-current 1/f noise upconversion into 1/f3 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/f3 phase noise generation.
Keywords :
1/f noise; harmonic oscillators (circuits); phase noise; 1/f3 phase noise; Colpitts oscillator; Groszkowski effect; Groszkowski theory; bias noise; differential-pair LC oscillator; harmonic oscillators; oscillation frequency; tail-bias-current 1/f noise upconversion; Capacitance; Frequency modulation; Harmonic analysis; Phase noise; Resistance;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5937540