Spectral Analysis of Line Sources With Complex Longitudinal Wavenumbers in Planarly Layered Media

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dc.authoridAlparslan, Aytac/0000-0002-0232-1479
dc.authorwosidAlparslan, Aytac/ABG-6526-2021
dc.contributor.authorAlparslan, Aytac
dc.date.accessioned2024-06-12T10:58:13Z
dc.date.available2024-06-12T10:58:13Z
dc.date.issued2021
dc.departmentTrakya Üniversitesien_US
dc.description.abstractSpectral properties of line sources carrying electric or magnetic current placed in a planarly layered medium are analyzed. It is shown that when the current along the line varies in the longitudinal direction by an exponential function with a complex exponent, classical Sommerfeld radiation condition that ensures outgoing and decaying fields simultaneously cannot always be used. Instead, depending on the exponent and the material properties of the layered medium, outgoing and exponentially increasing or incoming and exponentially decreasing waves are generated. This property is not observed when the exponent is real where the classical Sommerfeld radiation condition is fulfilled. In this article, an in-depth analysis of layered media is first performed in spectral domain as a function of the longitudinal dependence of the line sources. Then, the fields generated by the line sources are obtained by Sommerfeld integrations using two different radiation conditions separately. The effect of the radiation condition on the fields are discussed both in the spectral and spatial domains. In addition, field patterns are compared with the results obtained by finite element method (FEM) combined with perfectly matched layers (PMLs) and several guidelines for increasing the efficiency of simulations by FEM are introduced.en_US
dc.description.sponsorshipTUB.ITAK [115C080]en_US
dc.description.sponsorshipThis work was supported by TUB.ITAK under Project 115C080.en_US
dc.identifier.doi10.1109/TAP.2020.3008617
dc.identifier.endpage442en_US
dc.identifier.issn0018-926X
dc.identifier.issn1558-2221
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85099082544en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage429en_US
dc.identifier.urihttps://doi.org/10.1109/TAP.2020.3008617
dc.identifier.urihttps://hdl.handle.net/20.500.14551/19983
dc.identifier.volume69en_US
dc.identifier.wosWOS:000627394500040en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIEEE-Inst Electrical Electronics Engineers Incen_US
dc.relation.ispartofIeee Transactions On Antennas And Propagationen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectComplex Longitudinal Dependenceen_US
dc.subjectFinite Element Method (FEM)en_US
dc.subjectGreen's Functionsen_US
dc.subjectLayered Mediaen_US
dc.subjectLine Sourceen_US
dc.subjectPerfectly Matched Layer (PML)en_US
dc.subjectSommerfeld's Radiation Conditionen_US
dc.subjectElectromagnetic Scatteringen_US
dc.subjectLeaky Modesen_US
dc.subjectGuideen_US
dc.subjectRepresentationsen_US
dc.subjectRadiationen_US
dc.subjectNanowiresen_US
dc.titleSpectral Analysis of Line Sources With Complex Longitudinal Wavenumbers in Planarly Layered Mediaen_US
dc.typeArticleen_US

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