Table of Contents
Advances in Electronics
Volume 2014, Article ID 176243, 15 pages
Research Article

Design of CDTA and VDTA Based Frequency Agile Filters

1Department of Electronics and Communication Engineering, Delhi Technological University, Delhi 110042, India
2Department of Electrical Engineering, Delhi Technological University, Delhi 110042, India

Received 21 May 2014; Revised 3 November 2014; Accepted 3 November 2014; Published 23 December 2014

Academic Editor: Weisheng Zhao

Copyright © 2014 Neeta Pandey et al. 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 frequency agile filters based on current difference transconductance amplifier (CDTA) and voltage difference transconductance amplifier (VDTA). The proposed agile filter configurations employ grounded passive components and hence are suitable for integration. Extensive SPICE simulations using 0.25 μm TSMC CMOS technology model parameters are carried out for functional verification. The proposed configurations are compared in terms of performance parameters such as power dissipation, signal to noise ratio (SNR), and maximum output noise voltage.