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Adjustable Quadrature Shadow Sinusoidal Oscillator
Author(s)
Buakaew, Seangrawee
Date Issued
January 1, 2022
Type
Conference Paper
Abstract
This article presents a shadow oscillator with quadrature-phase outputs. The proposed circuit employs the voltage differential transconductance amplifier (VDTA) and two grounded passive elements. The frequency of the oscillation, as well as the condition of oscillation, are accomplished through the tunning of the gains of the external amplifiers. Therefore, frequency adjustability can be performed without the effect on the biquad cell which is the main feature of the shadow oscillators. The results from the PSpice simulations employing the CMOS circuit level are included to verify the proposed quadrature shadow oscillator configurations.
Citation
8th International Conference on Engineering Applied Sciences and Technology Iceast 2022 Proceedings, 42-45, 2022