Table of Contents
International Scholarly Research Notices
Volume 2014, Article ID 762845, 4 pages
Research Article

Transadmittance Type Universal Current-Mode Biquad Filter Using VDTAs

1Department of Electronics and Communication Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi 110025, India
2Department of Electronics and Communication Engineering, Amity School of Engineering and Technology, Amity University, Sector 125, Noida 201313, Uttar Pradesh, India

Received 15 March 2014; Revised 8 May 2014; Accepted 12 May 2014; Published 19 August 2014

Academic Editor: Spyridon Nikolaidis

Copyright © 2014 Dinesh Prasad 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.


A new resistorless single-input-multi-output (SIMO) universal transadmittance (TA) type filter employing two voltage differencing transconductance amplifiers (VDTA) and two grounded capacitors is proposed. The proposed topology realizes simultaneously low pass (LP), high pass (HP), and band pass (BP) filter functions. Band rejects (BR) and all pass (AP) filters are also realizable through appropriate connections of currents. The proposed configuration also offers independent control of natural angular frequency and bandwidth (BW) and low active and passive sensitivities. The workability of proposed configuration has been demonstrated through PSPICE simulations with TSMC CMOS 0.18 μm process parameters.