Field programmable analogue array implementation of fractional step filters
Field programmable analogue array implementation of fractional step filters
- Author(s): T.J. Freeborn ; B. Maundy ; A.S. Elwakil
- DOI: 10.1049/iet-cds.2010.0141
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- Author(s): T.J. Freeborn 1 ; B. Maundy 1 ; A.S. Elwakil 2
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View affiliations
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Affiliations:
1: Department of Electrical and Computer Engineering, University of Calgary, Calgary, Canada
2: Department of Electrical and Computer Engineering, University of Sharjah, Sharjah, United Arab Emirates
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Affiliations:
1: Department of Electrical and Computer Engineering, University of Calgary, Calgary, Canada
- Source:
Volume 4, Issue 6,
November 2010,
p.
514 – 524
DOI: 10.1049/iet-cds.2010.0141 , Print ISSN 1751-858X, Online ISSN 1751-8598
In this study, the authors propose the use of field programmable analogue array hardware to implement an approximated fractional step transfer function of order (n+α) where n is an integer and 0 < α < 1. The authors show how these filters can be designed using an integer order transfer function approximation of the fractional order Laplacian operator sα. First and fourth-order low- and high-pass filters with fractional steps from 0.1 to 0.9, that is of order 1.1–1.9 and 4.1–4.9, respectively, are given as examples. MATLAB simulations and experimental results of the filters verify the implementation and operation of the fractional step filters.
Inspec keywords: field programmable analogue arrays; low-pass filters; high-pass filters
Other keywords:
Subjects: Analogue circuits; Analogue processing circuits; Filters and other networks
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