Voltage-Mode CFTA-C Third-Order Elliptic Low-Pass Filter Design and Optimization Using Signal Flow Graph Approach
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Date
2015-04-15
Authors
Herencsár, Norbert
Koton, Jaroslav
Horng, Jiun-Wei
Vrba, Kamil
Venclovský, Martin
0000-0002-9504-2275Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Kaunas University of Technology
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Abstract
In this work, two active only grounded-C equivalents of third-order voltage-mode (VM) elliptic low-pass (LP) LC ladder prototype are proposed. As active building blocks (ABBs) the recently introduced current follower transconductance amplifier (CFTA) were used. The first active only grounded-C LP filter employing eight CFTAs was proposed by interconnecting CFTA-based active equivalent sub-blocks of passive components, where one of the low-impedance input terminals is not used. Since such feature may cause some noise injection into the proposed circuit, the proposed filter was optimized using Mason-Coates' signal flow graph approach. In several steps the number of ABBs was reduced by two and the unused input terminal was eliminated. The performance of the novel and optimized active only grounded-C third-order VM elliptic LP filter was tested experimentally using the readily available UCC-N1B integrated circuit.
Description
Citation
Elektronika Ir Elektrotechnika. 2015, vol. 21, issue 2, p. 24-29.
https://eejournal.ktu.lt/index.php/elt/article/view/11508
https://eejournal.ktu.lt/index.php/elt/article/view/11508
Document type
Peer-reviewed
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Published version
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Language of document
en