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Active and Passive Electronic Components
Volume 2012 (2012), Article ID 719376, 6 pages
http://dx.doi.org/10.1155/2012/719376
Research Article

Electronically Tunable Sinusoidal Oscillator Circuit

Department of Electronics Engineering, Zakir Hussain College of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India

Received 29 March 2012; Accepted 4 June 2012

Academic Editor: Winai Jaikla

Copyright © 2012 Sudhanshu Maheshwari and Rishabh Verma. 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.

Abstract

This paper presents a novel electronically tunable third-order sinusoidal oscillator synthesized from a simple topology, employing current-mode blocks. The circuit is realized using the active element: Current Controlled Conveyors (CCCIIs) and grounded passive components. The new circuit enjoys the advantages of noninteractive electronically tunable frequency of oscillation, use of grounded passive components, and the simultaneous availability of three sinusoidal voltage outputs. Bias current generation scheme is given for the active elements used. The circuit exhibits good high frequency performance. Nonideal and parasitic study has also been carried out. Wide range frequency tuning is shown with the bias current. The proposed theory is verified through extensive PSPICE simulations using 0.25 μm CMOS process parameters.