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Active and Passive Electronic Components
Volume 25, Issue 4, Pages 321-325

A Tunable Quadrature Oscillator with Only Transconductance Elements and Grounded Capacitors

1Department of Electronics Engineering, Aligarh Muslim University, Aligarh 202 002, India
2Department of Electrical and Electronics Engineering, University of Bahrain, Isa Town, Bahrain
3Electronics Engineering Section, Women's Polytechnic, Aligarh Muslim University, Aligarh 202 002, India

Received 18 May 2002; Revised 3 July 2002

Copyright © 2002 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A novel quadrature oscillator is realised with only transconductance elements (TEs) and grounded capacitors. The realised quadrature oscillator uses only two inverting and two non-inverting transconductance elements, along with two grounded capacitors. The quadrature oscillator enjoys the attractive features of low component count, independent frequency tuning and suitability for integration in MOS technology.