A Modified Vector Fitting Technique to Extract Coupling Matrix from S-parameters

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dc.contributor.authorNg, C. L.
dc.contributor.authorSoeung, S.
dc.contributor.authorCheab, S.
dc.contributor.authorLeong, K. Y.
dc.coverage.issue3cs
dc.coverage.volume32cs
dc.date.accessioned2023-10-11T08:00:48Z
dc.date.available2023-10-11T08:00:48Z
dc.date.issued2023-09cs
dc.description.abstractIn this paper, a modified vector fitting technique to extract coupling matrix from S-parameters is introduced. This work allows designers to extract the coupling matrix of different or any pre-defined topologies from the simulated or measured S-parameter data. A study on vector fitting (VF) equations that can extract the rational polynomial of bandpass filter responses is carried out. The rational polynomials are formed by applying the VF process to S-parameter responses without having to remove the phase offset and de-embedding the transmission lines. The desired coupling matrix configuration is generated directly from the extracted polynomials using unconstrained and finitely bounded non-linear polynomials (NLP) optimization. Without the need for matrix transformation, the matrix elements are still able to show a one-to-one relationship in coupling values of resonators. Two bandpass filters are shown as examples to illustrate the performance of the new variation of VF.en
dc.formattextcs
dc.format.extent325-331cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2023 vol. 32, č. 3, s. 325-331. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2023.0325en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/214340
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2023/23_03_0325_0331.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectCoupling matrixen
dc.subjectmicrowave filteren
dc.subjectS-parameter extractionen
dc.subjectvector fittingen
dc.titleA Modified Vector Fitting Technique to Extract Coupling Matrix from S-parametersen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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