RC Phase-Shifter Variable Sinusoidal Oscillators Using Initial Conditions-Restoration Amplitude Control

Pookaiyaudom, Sitthichai; Saivichit, Kanit

doi:10.1109/19.65822

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

DOI

10.1109/19.65822

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