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Active and Passive Electronic Components
Volume 2014, Article ID 480590, 7 pages
Research Article

Sinusoidal Generator with π/4-Shifted Four/Eight Voltage Outputs Employing Four Grounded Components and Two/Six Active Elements

Department of Electronics Engineering, Z. H. College of Engineering and Technology, AMU, Aligarh 202002, India

Received 31 May 2014; Revised 15 July 2014; Accepted 24 July 2014; Published 28 August 2014

Academic Editor: Ali Umit Keskin

Copyright © 2014 Sudhanshu Maheshwari. 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.


This paper presents a new circuit proposal for multiphase sine-wave generation, employing two active elements and four grounded passive elements. The proposed oscillator provides four 45° phase-shifted voltage outputs. Incorporation of additional inverters for generation of eight-phase outputs is further shown. Simultaneous current outputs can also be generated with additional output stages. The compact circuit structure is studied for nonideal and parasitic effects and simulation results are given, which are in good agreement with the theory. The utility of the proposal for π/4-QPSK generation is explored as an interesting application example with supporting results.