Current-Processing Current-Controlled Universal Biquad Filter
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Date
2012-04
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Mark
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Společnost pro radioelektronické inženýrství
Abstract
This paper presents a current-processing current-controlled universal biquad filter. The proposed filter employs only two current controlled current conveyor transconductance amplifiers (CCCCTAs) and two grounded capacitors. The proposed configuration can be used either as a single input three outputs (SITO) or as three inputs single output (TISO) filter. The circuit realizes all five different standard filter functions i.e. low-pass (LP), band-pass (BP), high-pass (HP), band-reject (BR) and all-pass (AP). The circuit enjoys electronic control of quality factor through the single bias current without disturbing pole frequency. Effects of non-idealities are also discussed. The circuit exhibits low active and passive sensitivity figures. The validity of proposed filter is verified through computer simulations using PSPICE.
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Citation
Radioengineering. 2012, vol. 21, č. 1, s. 317-323. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2012/12_01_0317_0323.pdf
http://www.radioeng.cz/fulltexts/2012/12_01_0317_0323.pdf
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Peer-reviewed
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en