Reconfigurable Fractional-Order Filter with Electronically Controllable Slope of Attenuation, Pole Frequency and Type of Approximation

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dc.contributor.authorJeřábek, Jancs
dc.contributor.authorŠotner, Romancs
dc.contributor.authorDvořák, Jancs
dc.contributor.authorPolák, Josefcs
dc.contributor.authorKubánek, Davidcs
dc.contributor.authorHerencsár, Norbertcs
dc.contributor.authorKoton, Jaroslavcs
dc.coverage.issue10cs
dc.coverage.volume26cs
dc.date.accessioned2020-08-04T11:01:10Z
dc.date.available2020-08-04T11:01:10Z
dc.date.issued2017-03-09cs
dc.description.abstractThis paper presents design of electronically reconfigurable fractional-order filter that is able to be configured to operate as fractional-order low-pass filter (FLPF) or fractional-order high-pass filter (FHPF). Its slope of attenuation between pass band and stop band, i.e. order of the filter, is electronically adjustable in range between 1 and 2. Also pole frequency can be electronically controlled independently with respect to other tuned parameters. Moreover, particular type of approximation can be also controlled electronically. This feature set is available both for FLPF and FHPF type of response. Presented structure of the filter is based on well-known follow-the-leader feedback (FLF) topology adjusted in our case for utilization with just simple active elements operational transconductance amplifiers (OTAs) and adjustable current amplifiers (ACAs), both providing possibility to control its key parameter electronically. Paper explains how reconfigurable 3rd-order FLF topology is used in order to approximate both FLPF and FHPF in concerned frequency band of interest. Design is supported by PSpice simulations for three particular values of order of the filter (1.25, 1.5, 1.75), for several values of pole frequency and for two particular types of approximation forming the shape of both the magnitude and phase response. Moreover, theoretical presumptions are successfully confirmed by laboratory measurements with prepared prototype based on behavioral modeling.en
dc.formattextcs
dc.format.extent1750157-1-1750157-21cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationJOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS. 2017, vol. 26, issue 10, p. 1750157-1-1750157-21.en
dc.identifier.doi10.1142/S0218126617501572cs
dc.identifier.issn1793-6454cs
dc.identifier.other134320cs
dc.identifier.urihttp://hdl.handle.net/11012/70926
dc.language.isoencs
dc.publisherWorld Scientific Publishingcs
dc.relation.ispartofJOURNAL OF CIRCUITS SYSTEMS AND COMPUTERScs
dc.relation.urihttp://www.worldscientific.com/doi/abs/10.1142/S0218126617501572cs
dc.rights(C) World Scientific Publishingcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1793-6454/cs
dc.subjectadjustable current amplifieren
dc.subjectapproximationen
dc.subjectACAen
dc.subjectfractional-order filteren
dc.subjectfractional-order high-pass filteren
dc.subjectfractional-order low-pass filteren
dc.subjectFLFen
dc.subjectfollow-the-leader feedbacken
dc.subjectfractional orderen
dc.subjectoperational transconductance amplifieren
dc.subjectOTAen
dc.subjectreconfigurable filter.en
dc.titleReconfigurable Fractional-Order Filter with Electronically Controllable Slope of Attenuation, Pole Frequency and Type of Approximationen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionacceptedVersionen
sync.item.dbidVAV-134320en
sync.item.dbtypeVAVen
sync.item.insts2020.11.10 17:22:56en
sync.item.modts2020.11.10 17:12:26en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav radioelektronikycs
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav telekomunikacícs
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