Tangsrirat, Worapong

Preferred name

Tangsrirat, Worapong

Alternative Name

Tangsrirat, W.

Main Affiliation

School of Engineering

Email

worapong.ta@kmitl.ac.th

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Multiple-input single-output current-mode multifunction filter using current differencing transconductance amplifiers
(2007-04-02)
Tangsrirat, Worapong
;
Dumawipata, Teerasilapa
;
Surakampontorn, Wanlop
A novel current-controlled multiple-input single-output current-mode universal filter employing current differencing transconductance amplifiers (CDTAs) as active elements is described. The proposed circuit offers the following attractive features: employment of the minimum number of active and passive components; simultaneous realization of all the standard filtering functions; independent current-control of the parameters ω<inf>o</inf> and ω<inf>o</inf> / Q; no requirement of component matching conditions; employment of only two grounded passive capacitors which is suitable for integrated circuit (IC) implementation; and low passive and active sensitivities. PSPICE simulation results are given to verify the theoretical analysis. An example application using the proposed circuit in cascade realization of the high-order current-mode filter is also presented. © 2006 Elsevier GmbH. All rights reserved.