A New Method for Designing Modified Compact Microstrip LPF with Sharp Roll-Off and Wide Stopband

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dc.contributor.authorHoseinabadi, Abbas
dc.contributor.authorTavakoli, Mohammad Bagher
dc.contributor.authorFatemi, Mohammad Jalal Rastegar
dc.contributor.authorSetoudeh, Farbod
dc.coverage.issue4cs
dc.coverage.volume30cs
dc.date.accessioned2021-12-13T09:46:54Z
dc.date.available2021-12-13T09:46:54Z
dc.date.issued2021-12cs
dc.description.abstractA new method for designing a compact microstrip lowpass filter (LPF) with wide stopband width (SBW) and sharp roll off (ROF) is presented. In proposed designing procedure, high impedance microstrip lines are bent to achieve an LPF with compact size. Then, to compensate for the effect of bending microstrip lines, the lengths of the lines are mathematically modified. Moreover, adding a suppressing cell composed of Radial stub resonator and a Butterfly stub resonator increases the SBW. Also, an elliptic filter structure is used to obtain sharp ROF. In this work, an LPF with 1.12 GHz cutoff frequency, 0.147 λg  0.133 λg filter size; where λg is the guided wavelength at cutoff frequency, the SBW equal to 13.4 GHz, and the ROF more than 201 dB / GHz, is designed, simulated and fabricated to demonstrate efficiency of the proposed method. Also, the other conventional characteristics for the fabricated LPF such as 0.3 dB insertion loss, 14.4 dB return loss, and suppression factor equal to 2.2, are in the appropriate range of their amounts.en
dc.formattextcs
dc.format.extent662-669cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2021 vol. 30, č. 4, s. 662-669. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2021.0662en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/203190
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2021/21_04_0662_0669.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectLowpass filteren
dc.subjectmicrostripen
dc.subjectelliptic filteren
dc.subjectstopband widthen
dc.subjectroll offen
dc.subjectcompact sizeen
dc.titleA New Method for Designing Modified Compact Microstrip LPF with Sharp Roll-Off and Wide Stopbanden
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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