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dc.contributor.authorIrcı, Erdinçen_US
dc.contributor.authorErtürk, Vakur B.en_US
dc.coverage.spatialHonolulu, HI, USAen_US
dc.date.accessioned2016-02-08T11:41:54Z
dc.date.available2016-02-08T11:41:54Z
dc.date.issued2007en_US
dc.identifier.issn1522-3965
dc.identifier.urihttp://hdl.handle.net/11693/27013
dc.descriptionDate of Conference: 9-15 June 2007en_US
dc.descriptionConference Name: Antennas and Propagation Society International Symposium, IEEE 2007en_US
dc.description.abstractRecently, reducing the radar cross sections (RCS) of various structures to achieve transparency and obtaining resonant structures aimed at increasing the electromagnetic intensities, stored or radiated power levels have been investigated. The transparency and resonance (RCS maximization) conditions investigated in are mainly attributed to pairing of "conjugate" materials: materials which have opposite signs of constitutive parameters [e.g., double-positive (DPS) and double- negative (DNG) or epsilon-negative (ENG) and mu-negative (MNG)]. In the present work, we extend the transparency and resonance conditions for cylindrical structures when the core cylinder is particularly perfect electric conductor (PEC). The appropriate constitutive parameters of such metamaterials are investigated for both TE and TM polarizations. For TE polarization it is found out that, the metamaterial coating permittivity has to be in the 0 < epsivc < epsiv0 interval to achieve transparency, and in the -epsiv0 < epsivc < 0 interval to achieve RCS maximization. As in the case of "conjugate" pairing, transparency and resonance are found to be heavily dependent on the ratio of core-coating radii, instead of the total size of the cylindrical structure. However, unlike the "conjugate" pairing cases, replacing epsiv by mu (and vice versa) does not lead to the same conclusions for TM polarization unless the PEC cylinder is replaced by a perfect magnetic conductor (PMC) cylinder. Yet, RCS maximization can also be achieved in the TM polarization case when coating permeability muc < 0, whereas transparency requires large \muc\ for this polarization. Numerical results, which demonstrate the transparency and RCS maximization phenomena, are given in the form of normalized monostatic and bistatic echo widths.en_US
dc.language.isoEnglishen_US
dc.source.titleProceedings of the Antennas and Propagation Society International Symposium, IEEE 2007en_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/APS.2007.4395629en_US
dc.subjectMetamaterialsen_US
dc.subjectRadar cross sectionen_US
dc.subjectPolarizationen_US
dc.subjectResonanceen_US
dc.subjectMagnetic materialsen_US
dc.subjectConducting materialsen_US
dc.subjectTelluriumen_US
dc.subjectCoatingsen_US
dc.subjectElectromagnetic radiationen_US
dc.subjectPermittivityen_US
dc.titleInvestigation of metamaterial coated conducting cylinders for achieving transparency and maximizing radar cross sectionen_US
dc.typeConference Paperen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.citation.spage857en_US
dc.citation.epage860en_US
dc.identifier.doi10.1109/APS.2007.4395629en_US
dc.publisherIEEEen_US


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