Solving electromagnetic boundary problems with equivalence methods

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Hänninen, Jari J. 2012-02-13T12:43:45Z 2012-02-13T12:43:45Z 2004-05-07
dc.identifier.isbn 951-22-7081-1
dc.identifier.issn 1456-632X
dc.description.abstract A basic problem in electromagnetics involves solving the Maxwell equations in a non-empty space, i.e. in a space with interfaces or boundaries. In this dissertation the wanted electromagnetic fields are searched via equivalence methods: a full electromagnetic problem is transformed to a simpler solvable form, or the solution is an equivalent source, or both. The chosen transformations result to two slightly different transmission line formulations or to Kelvin inversion (inversion in a sphere). The equivalent source is typically an image source. The included cases are 1) a planar multilayer chiral structure, 2) a conducting earth under a current source, 3) a sphere in an isotropic or bi-isotropic space, and 4) three types of anisotropic half-space-planar boundary or half-space problems. The first two cases (three papers) are time-dependent problems and the latter two (four papers) statics or quasi-statics. In each case the solution methodology is presented, the solutions are written, and the implications and limitations are discussed. en
dc.format.extent 23, [104]
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.relation.ispartofseries Electromagnetics Laboratory report series en
dc.relation.ispartofseries 434 en
dc.relation.haspart Oksanen M. I., Hänninen J. and Tretyakov S. A., 1991. Vector circuit method for calculating reflection and transmission of electromagnetic waves in multilayer chiral structures. IEE Proceedings H – Microwaves, Antennas and Propagation 138, number 6, pages 513-520.
dc.relation.haspart Lindell I. V. and Hänninen J. J., 2000. Static image principle for the sphere in isotropic or bi-isotropic space. Radio Science 35, number 3, pages 653-660.
dc.relation.haspart Lindell I. V., Hänninen J. J. and Pirjola R., 2000. Wait's complex-image principle generalized to arbitrary sources. IEEE Transactions on Antennas and Propagation 48, number 10, pages 1618-1624.
dc.relation.haspart Hänninen J. J., Pirjola R. J. and Lindell I. V., 2002. Application of the exact image theory to studies of ground effects of space weather. Geophysical Journal International 151, number 2, pages 534-542.
dc.relation.haspart Lindell I. V., Hänninen J. J. and Nikoskinen K. I., Electrostatic image theory for an anisotropic boundary. IEE Proceedings – Science, Measurement and Technology, accepted for publication.
dc.relation.haspart Hänninen J. J., Lindell I. V. and Nikoskinen K. I., 2004. Electrostatic image theory for an anisotropic boundary of an anisotropic half-space. Progress in Electromagnetics Research 47, pages 235-262.
dc.relation.haspart Hänninen J. J., Nikoskinen K. I. and Lindell I. V., 2004. Electrostatic image theory for two anisotropic half-spaces. Helsinki University of Technology, Electromagnetics Laboratory Report Series, Report 428. Submitted in shorter form to Electrical Engineering (Archiv für Elektrotechnik).
dc.subject.other Electrical engineering en
dc.title Solving electromagnetic boundary problems with equivalence methods en
dc.type G5 Artikkeliväitöskirja fi
dc.description.version reviewed en
dc.contributor.department Department of Electrical and Communications Engineering en
dc.contributor.department Sähkö- ja tietoliikennetekniikan osasto fi
dc.subject.keyword equivalence method en
dc.subject.keyword equivalent source en
dc.subject.keyword electromagnetic image principle en
dc.subject.keyword Kelvin inversion en
dc.subject.keyword bi-isotropic medium en
dc.subject.keyword anisotropic medium en
dc.subject.keyword exact image theory (EIT) en
dc.subject.keyword geomagnetically induced currents (GIC) en
dc.subject.keyword transmission line en
dc.subject.keyword electrostatics en
dc.identifier.urn urn:nbn:fi:tkk-003558
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.type.ontasot Doctoral dissertation (article-based) en
dc.contributor.lab Electromagnetics Laboratory en
dc.contributor.lab Elektromagnetiikan laboratorio fi

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