Harmonic analysis of RC-active phase shift oscillators

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Abstract

This paper describes a significantly improved method for calculating the harmonic distortion content of active-RC phase shift oscillators. The proposed method introduces the truncated harmonic transfer function (THTF) which is related to the two-sinusoidal-input describing function (TSIDF) of non-linear control theory. This allows accurate calculation of the distortion terms in oscillator systems containing higher signal levels and therefore higher levels of nonlinearity than is possible with conventional methods. The method is quite general in its application and this paper considers both cubic and quadratic nonlinearities. The method is demonstrated using examples employing the Wien RC-bandpass oscillator with a quadratic nonlinearity.
Original languageEnglish
Pages1131-1134
DOIs
Publication statusPublished - 2008
Event15th IEEE International Conference on Electronics, Circuits and Systems (ICECS), 2008 - , UK United Kingdom
Duration: 31 Aug 20083 Sep 2008

Conference

Conference15th IEEE International Conference on Electronics, Circuits and Systems (ICECS), 2008
CountryUK United Kingdom
Period31/08/083/09/08

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Taylor, J. (2008). Harmonic analysis of RC-active phase shift oscillators. 1131-1134. Paper presented at 15th IEEE International Conference on Electronics, Circuits and Systems (ICECS), 2008 , UK United Kingdom. https://doi.org/10.1109/ICECS.2008.4675057