An alternative coupling matrix arrangement for capacitively loaded multi-mode microstrip diplexers having close channel bands

dc.contributor.authorKarpuz, Ceyhun
dc.contributor.authorOzdemir, Pinar Ozturk
dc.contributor.authorBalik, Hasan Huseyin
dc.contributor.authorGorur, Adnan
dc.date.accessioned2024-11-07T13:34:41Z
dc.date.available2024-11-07T13:34:41Z
dc.date.issued2023
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractIn this paper, a design procedure for multi-mode diplexers having closely located bands and an alternative coupling matrix arrangement suitable for all types are reported. The proposed topology includes the interdigital capacitive fingers as a loading element. In addition, the theoretical approach is based on the combination of a polynomial synthesis procedure and the coupling matrix synthesis method. The validation is shown by the design and fabrication of new microstrip diplexers having two different dual/quad modes bandpass filters to explain how the required selectivity and the isolation between the close channels are obtained. To obtain the best performance without an extra matching circuit, the capacitively loaded loop resonators used as a channel filter are fed by a T-junction. To obtain a sufficient coupling effect a serial capacity is used in the input/output. The proposed resonator is investigated by using the even-odd mode analysis to evaluate the resonance frequencies, transmission zeros, and return loss level. An interdigital loading element not only achieves dual-mode characteristics without the requirement of any extra surface area but also moves the transmission zeros to the desired side of the passband. The proposed diplexers have advantages such as compact size, good selectivity, interconnection capability, and high isolation.
dc.description.sponsorshipScientific and Technological Research Council of Turkiye (TUBITAK) [120E101]
dc.description.sponsorshipThis work has been supported the Scientific and Technological Research Council of Turkiye (TUBITAK) under Grant 120E101.
dc.identifier.doi10.1016/j.aeue.2023.154540
dc.identifier.issn1434-8411
dc.identifier.issn1618-0399
dc.identifier.scopus2-s2.0-85147324348
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.aeue.2023.154540
dc.identifier.urihttps://hdl.handle.net/11480/16116
dc.identifier.volume161
dc.identifier.wosWOS:000989193000001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Gmbh
dc.relation.ispartofAeu-International Journal of Electronics and Communications
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectMicrostrip diplexer
dc.subjectMicrostrip open loop resonator
dc.subjectCoupling matrix
dc.subjectLoading element
dc.subjectMulti-mode
dc.titleAn alternative coupling matrix arrangement for capacitively loaded multi-mode microstrip diplexers having close channel bands
dc.typeArticle

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