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Electronically tunable current-mode universal biquadratic filter using a single CCCFTA

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1 Author(s)
Kumngern, M. ; Department of Telecommunications Engineering, Faculty of Engineering, King Mongkut''s Institute of Technology Ladkrabang, Bangkok 10520, Thailand

This paper presents a new electronically tunable current-mode universal biquadratic filter with three inputs and single output employing only a single current-controlled current follower transconductance amplifier (CCCFTA) and two grounded capacitors. The proposed filter provides following advantages: low number of active and passive components; realization of low-pass, band-pass, high-pass, band-stop and all-pass current responses; employment of grounded capacitors; no requirement with the component-matching conditions and the inverting-type input signals to realize specific filtering; electronic control of the natural frequency and low active and passive sensitivities. Simulation results using PSPICE are given to confirm the presented theory.

Published in:

Circuits and Systems (ISCAS), 2012 IEEE International Symposium on

Date of Conference:

20-23 May 2012

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