Title :
Phase noise to carrier ratio in LC oscillators
Author_Institution :
Integrated Syst. Lab., Swiss Fed. Inst. of Technol., Zurich, Switzerland
fDate :
7/1/2000 12:00:00 AM
Abstract :
An analysis is presented in this contribution to describe the steady-state amplitude of a CMOS LC Colpitts oscillator, as well as its response to small interferences. The problem of signal dependency of noise sources is also addressed. The general conclusions of the analysis are applicable to most LC oscillators. The procedure to perform a general analysis for an arbitrary LC oscillators is outlined. Controlled experiments are used to verify each important conclusion for the Colpitts analysis and implications on design are discussed
Keywords :
CMOS analogue integrated circuits; circuit noise; nonlinear network analysis; phase noise; variable-frequency oscillators; CMOS Colpitts oscillator; LC oscillators; noise sources; phase noise to carrier ratio; signal dependency; steady-state amplitude; 1f noise; CMOS technology; Circuit noise; Frequency; Inductors; Noise level; Oscillators; Phase noise; Q factor; Signal to noise ratio;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
