Single-Input Five-Output Electronically Tunable Current-Mode Biquad Consisting of Only ZC-CFTAs and Grounded Capacitors
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Date
2011-09
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Referee
Mark
Journal Title
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Publisher
Společnost pro radioelektronické inženýrství
Abstract
This paper presents an electronically tunable current-mode biquadratic filter constructing with four Z-copy current follower transconductance amplifiers (ZC-CFTAs) and only two grounded capacitors. The presented filter can realize all the five standard biquadratic functions simultaneously without requiring any component matching conditions and connecting any relevant output currents. The circuit has one low-impedance input and five high-impedance outputs, resulting in easy cascadability in current-mode. Also, the developed circuit exhibits the advantage of non-interactive electronic control of the natural angular frequency and the quality factor Q along with low incremental active and passive sensitivities. Computer simulation results using PSPICE program are given to confirm the validity of the theoretical prediction and to point out the attractive performance of the circuit.
Description
Citation
Radioengineering. 2011, vol. 20, č. 3, s. 650-655. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2011/11_03_650_655.pdf
http://www.radioeng.cz/fulltexts/2011/11_03_650_655.pdf
Document type
Peer-reviewed
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Published version
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en