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RC Phase-Shifter Variable Sinusoidal Oscillators Using Initial Conditions-Restoration Amplitude Control
Author(s)
Pookaiyaudom, Sitthichai
Saivichit, Kanit
Date Issued
January 1, 1990
Type
Article
Abstract
A low-distortion instrumentation-quality variable sinusoidal oscillator using RC phase-shifters with initial conditions-restoration amplitude control technique has been developed. The variable frequency range is greater than five orders of magnitude. Exact analysis of the oscillation and the distortion characteristics have been investigated, including the effects of the finite time taken to restore the initial conditions upon the amplitude and the distortion. Discrete time simulation technique has been used to investigate the oscillation dynamics when the frequency is continuously changing. Experimental results confirming the validity of the theory are also presented. © 1990 IEEE
Citation
IEEE Transactions on Instrumentation and Measurement, 39(6), 1038-1044, 1990