Table of Contents
ISRN Electronics
Volume 2013, Article ID 915758, 7 pages
Research Article

Low-Voltage Complex Filters Using Current Feedback Operational Amplifiers

Electronics Laboratory, Physics Department, University of Patras, 26504 Rio Patras, Greece

Received 4 April 2013; Accepted 12 May 2013

Academic Editors: H. A. Alzaher and E. Tlelo-Cuautle

Copyright © 2013 Panagiotis Samiotis and Costas Psychalinos. 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 complex filter topology realized using current feedback operational amplifiers as active elements is introduced in this paper. Offered benefits are the low-voltage operation capability and the requirement for employing only grounded passive elements. Two application examples are provided, where the frequency behavior of the derived filters fulfills the ZigBee and Bluetooth standards, respectively. Their performance evaluation has been done through simulation results at postlayout level, using MOS transistor models provided by AMS C35B4 CMOS process.