Realisation of low-voltage square-root-domain all-pass filters

Novel l ow-voltage first-order and second-order square-root-domain all-pass filters derived systematically by means of transfer function decomposition and state -space synthesis techniques are proposed. The employment of only a few geometric-mean cells and grounded capacitors permits the...

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Main Authors: Farooq A. Khanday, Nisar A. Shah
Format: Article
Language:English
Published: Maejo University 2013-10-01
Series:Maejo International Journal of Science and Technology
Subjects:
Online Access:http://www.mijst.mju.ac.th/vol7/422-432.pdf
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author Farooq A. Khanday
Nisar A. Shah
author_facet Farooq A. Khanday
Nisar A. Shah
author_sort Farooq A. Khanday
collection DOAJ
description Novel l ow-voltage first-order and second-order square-root-domain all-pass filters derived systematically by means of transfer function decomposition and state -space synthesis techniques are proposed. The employment of only a few geometric-mean cells and grounded capacitors permits the circuits to absorb shunt parasitic capacitances, which is desirable for production in monolithic form . The circuits enjoy the features of electronic adjustment of frequency characteristics, wider dynamic range and low-voltage environment operation. The filters are employed to design high-order all-pass filters using cascade approach. First-order low-pass and second-order band-pass filters, being the inherited building blocks of the proposed low-order all-pass filters are also discussed. The behaviour of the filters is evaluated through simulations using Taiwan semiconductor manufacturing company 0.25 μm level-3 complementary metal oxide semiconductor process parameters, where the most important performance factors are considered.
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spelling doaj.art-e21ab91e2eba4d328c43f9d7f80b98782022-12-21T19:43:27ZengMaejo UniversityMaejo International Journal of Science and Technology1905-78731905-78732013-10-0170342243210.14456/mijst.2013.35Realisation of low-voltage square-root-domain all-pass filtersFarooq A. Khanday0Nisar A. Shah1Department of Electronics and Instrumentation Technology, University of Kashmir, Srinagar, India Department of Electronics and Instrumentation Technology, University of Kashmir, Srinagar, India Novel l ow-voltage first-order and second-order square-root-domain all-pass filters derived systematically by means of transfer function decomposition and state -space synthesis techniques are proposed. The employment of only a few geometric-mean cells and grounded capacitors permits the circuits to absorb shunt parasitic capacitances, which is desirable for production in monolithic form . The circuits enjoy the features of electronic adjustment of frequency characteristics, wider dynamic range and low-voltage environment operation. The filters are employed to design high-order all-pass filters using cascade approach. First-order low-pass and second-order band-pass filters, being the inherited building blocks of the proposed low-order all-pass filters are also discussed. The behaviour of the filters is evaluated through simulations using Taiwan semiconductor manufacturing company 0.25 μm level-3 complementary metal oxide semiconductor process parameters, where the most important performance factors are considered.http://www.mijst.mju.ac.th/vol7/422-432.pdfanalog integrated circuitscompanding filterscurrent-mode circuitssquareroot-domain filtersall-pass filters
spellingShingle Farooq A. Khanday
Nisar A. Shah
Realisation of low-voltage square-root-domain all-pass filters
Maejo International Journal of Science and Technology
analog integrated circuits
companding filters
current-mode circuits
squareroot-domain filters
all-pass filters
title Realisation of low-voltage square-root-domain all-pass filters
title_full Realisation of low-voltage square-root-domain all-pass filters
title_fullStr Realisation of low-voltage square-root-domain all-pass filters
title_full_unstemmed Realisation of low-voltage square-root-domain all-pass filters
title_short Realisation of low-voltage square-root-domain all-pass filters
title_sort realisation of low voltage square root domain all pass filters
topic analog integrated circuits
companding filters
current-mode circuits
squareroot-domain filters
all-pass filters
url http://www.mijst.mju.ac.th/vol7/422-432.pdf
work_keys_str_mv AT farooqakhanday realisationoflowvoltagesquarerootdomainallpassfilters
AT nisarashah realisationoflowvoltagesquarerootdomainallpassfilters