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Current-Mode Quadrature Qscillator and Universal Filter Using ZC-CCFTAs
Author(s)
Knobnob, Boonying
Date Issued
July 2, 2018
Type
Conference Paper
Abstract
In this paper, a new current-mode quadrature oscillator and universal filter employing two z-copy current controlled current follower transconductance amplifiers (ZC-CCFTAs) and two grounded capacitors is presented. Either a quadrature oscillator or a universal filter can be obtained into single topology. In case the circuit works as a quadrature oscillator, the condition of oscillation and the frequency of oscillation can be orthogonally controlled. In case the circuit works as a universal filter, low-pass, high-pass, band-pass, band-stop and all-pass filters can be simultaneously obtained. SPICE simulations results are presented to verify the validity of proposed circuit, which are consistent with theoretical predictions.
Citation
2018 IEEE 5th International Conference on Engineering Technologies and Applied Sciences Icetas 2018, 2018