Efficient solutions of metamaterial problems using a low-frequency multilevel fast multipole algorithm

buir.contributor.authorGürel, Levent
buir.contributor.authorErgül, Özgür
dc.citation.epage99en_US
dc.citation.spage81en_US
dc.citation.volumeNumber108en_US
dc.contributor.authorErgül, Özgüren_US
dc.contributor.authorGürel, Leventen_US
dc.date.accessioned2016-02-08T09:56:00Z
dc.date.available2016-02-08T09:56:00Z
dc.date.issued2010en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentComputational Electromagnetics Research Center (BiLCEM)en_US
dc.description.abstractWe present fast and accurate solutions of electromagnetics problems involving realistic metamaterial structures using a lowfrequency multilevel fast multipole algorithm (LF-MLFMA). Accelerating iterative solutions using robust preconditioning techniques may not be sufficient to reduce the overall processing time when the ordinary high-frequency MLFMA is applied to metamaterial problems. The major bottleneck, i.e., the low-frequency breakdown, should be eliminated for efficient solutions. We show that the combination of an LF-MLFMA implementation based on the multipole expansion with the sparse-approximate-inverse preconditioner enables efficient and accurate analysis of realistic metamaterial structures. Using the robust LF-MLFMA implementation, we demonstrate how the transmission properties of metamaterial walls can be enhanced with randomlyoriented unit cells.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T09:56:00Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2010en
dc.identifier.issn1070-4698
dc.identifier.urihttp://hdl.handle.net/11693/22134
dc.language.isoEnglishen_US
dc.source.titleProgress in Electromagnetics Researchen_US
dc.subjectAccurate analysisen_US
dc.subjectElectromagneticsen_US
dc.subjectHigh frequency HFen_US
dc.subjectIterative solutionsen_US
dc.subjectLow frequencyen_US
dc.subjectLow-frequency breakdownen_US
dc.subjectMetamaterial structuresen_US
dc.subjectMulti-level fast multi-pole algorithmen_US
dc.subjectMultipole expansionsen_US
dc.subjectPreconditionersen_US
dc.subjectPreconditioning techniquesen_US
dc.subjectProcessing timeen_US
dc.subjectTransmission propertyen_US
dc.subjectUnit cellsen_US
dc.subjectAlgorithmsen_US
dc.subjectWalls (structural partitions)en_US
dc.subjectMetamaterialsen_US
dc.titleEfficient solutions of metamaterial problems using a low-frequency multilevel fast multipole algorithmen_US
dc.typeArticleen_US

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