High output-impedance current-mode third-order quadrature oscillator based on CCCCTAs

• Published in: TENCON 2009 - 2009 IEEE Region 10 Conference pp. 1 - 4
• Main Authors: Lawanwisut, S., Siripruchyanun, M.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.11.2009
• Subjects: Capacitors; ccccta; Circuit simulation; current-mode; Energy consumption; Filters; Frequency; Impedance; oscillator; Oscillators; Resistors; SPICE; Transconductance
• ISBN: 9781424445462; 1424445469
• ISSN: 2159-3442
• DOI: 10.1109/TENCON.2009.5395961

This article presents a 3 rd order current-mode quadrature oscillator using current controlled current conveyor transconductance amplifiers (CCCCTAs) as active elements. The proposed circuit is realized from a non-inverting lossless integrator and an inverting second-order lowpass filter. The oscillation condition and oscillation frequency can be electronically/orthogonally controlled via input bias currents. The circuit description is very simple, consisting of merely 2 CCCCTAs and 2 grounded capacitors. Without any external resistors and using only grounded elements, the proposed circuit is then suitable for IC architecture. Due to high-output impedances, the proposed circuit is enable easy cascading in current-mode. The PSPICE simulation results are depicted, and the given results agree well with the theoretical anticipation. The power consumption is approximately 2.43 mW at ±3 V supply voltages.