Analytical synthesis of odd/even‐nth‐order elliptic Cauer filter structures using OTRAs

Medientyp: E-Artikel
Titel: Analytical synthesis of odd/even‐nth‐order elliptic Cauer filter structures using OTRAs
Beteiligte: Chang, Chun‐Ming; Swamy, M. N. S.
Erschienen: Wiley, 2013
Erschienen in: International Journal of Circuit Theory and Applications, 41 (2013) 12, Seite 1248-1271
Sprache: Englisch
DOI: 10.1002/cta.1827
ISSN: 1097-007X; 0098-9886
Schlagwörter: Applied Mathematics ; Electrical and Electronic Engineering ; Computer Science Applications ; Electronic, Optical and Magnetic Materials
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Beschreibung: SUMMARYThe operational transresistance amplifier (OTRA), the dual of the well‐known operational transconductance amplifier, is an attractive element for use in circuit design. One odd‐nth‐order and two even‐nth‐order OTRA‐R‐C or OTRA‐MOS‐C elliptic Cauer filter structures are presented using new analytical synthesis methods (ASMs). Because it is assumed in the synthesis procedure that the transresistance Rm → ∞, but in view of the fact that Rm is finite in practice, the more the number of OTRAs employed, the worse the precision of the output signals. By studying the sensitivity of the output to component variations, more precise output may be obtained by selecting one or two appropriate capacitance(s)/resistance(s) and adjusting their values suitably. H‐spice simulations are given to validate and demonstrate the theoretical predictions. Copyright © 2012 John Wiley & Sons, Ltd.

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