Title :
Noise analysis of an oscillator with an Mth-order filter and comparator-type nonlinearity
Author :
Dec, Aleksander ; T?³th, L??szl?³ ; Suyama, Ken
Author_Institution :
Dept. of Electr. Eng., Columbia Univ., New York, NY, USA
Abstract :
This paper presents noise analysis of a class of oscillators, which can be modeled by a positive feedback system with a Mth-order filter, a comparator-type nonlinearity, and a white noise input. An analytical expression for the output power spectral density is given. For a special case of a 2nd-order bandpass filter, the expression can be simplified and shown to reduce to a well-known result under a high Q-factor assumption. The theoretical results presented here are verified by experiment
Keywords :
band-pass filters; circuit noise; comparators (circuits); feedback oscillators; nonlinear network analysis; white noise; Mth-order filter; Q-factor; comparator nonlinearity; noise analysis; oscillator; output power spectral density; positive feedback; second-order bandpass filter; white noise; Band pass filters; Circuit noise; Feedback; Fluctuations; Oscillators; Power generation; Power system modeling; Q factor; Steady-state; White noise;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704267
