About: Determination of frequency response of complex permittivity by global optimization

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Abstract : This paper discusses the application of global optimization to find of the frequency dependence of the complex permittivity of dielectric materials. If a slice of a real unknown material inserted into waveguide, its reflection and transmission coefficients can be measured and used as the desired optimum for the optimization of its numerical model to find appropriate values of complex permittivity to yield the same behavior of the model like the unknown material exhibits during measurements. The described approach is practically used to simplify numerical EMC simulations of aircraft models containing parts from multilayer composite materials (a dielectric, laminate layer completed by a shielding formed by metallic grating). Due to the fine structure of the grating, the numerical model of the composite requires an extremely dense discretization mesh resulting in very high CPU-time and memory demands. When replacing composite parts by equivalent homogeneous dielectric parts with the same beha Abstract : This paper discusses the application of global optimization to find of the frequency dependence of the complex permittivity of dielectric materials. If a slice of a real unknown material inserted into waveguide, its reflection and transmission coefficients can be measured and used as the desired optimum for the optimization of its numerical model to find appropriate values of complex permittivity to yield the same behavior of the model like the unknown material exhibits during measurements. The described approach is practically used to simplify numerical EMC simulations of aircraft models containing parts from multilayer composite materials (a dielectric, laminate layer completed by a shielding formed by metallic grating). Due to the fine structure of the grating, the numerical model of the composite requires an extremely dense discretization mesh resulting in very high CPU-time and memory demands. When replacing composite parts by equivalent homogeneous dielectric parts with the same beha (en)
Title	Determination of frequency response of complex permittivity by global optimization Determination of frequency response of complex permittivity by global optimization (en)
skos:prefLabel	Determination of frequency response of complex permittivity by global optimization Determination of frequency response of complex permittivity by global optimization (en)
skos:notation	RIV/00216305:26220/08:PU75936!RIV11-MSM-26220___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(FT-TA4/043), P(GA102/01/0571), P(GA102/07/0688), P(GD102/08/H018), P(OC08027)
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Jilková, Jana Raida, Zbyněk
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta elektrotechniky a komunikačních technologií
http://linked.open...dnocenehoVysledku	362952
http://linked.open...ai/riv/idVysledku	RIV/00216305:26220/08:PU75936
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Microwave waveguide, composite, global optimization, Genetic Algorithm, (en)
http://linked.open.../riv/klicoveSlovo	Genetic Algorithm composite global optimization Microwave waveguide
http://linked.open...ontrolniKodProRIV	[0F2CA9D5443B]
http://linked.open...v/mistoKonaniAkce	Damascus, Sýrie
http://linked.open...i/riv/mistoVydani	Damascus, Sýrie
http://linked.open...i/riv/nazevZdroje	Mediterranean Microwave Symposium MMS'2008
http://linked.open...in/vavai/riv/obor	JA
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Advanced microwave structures on non-conventional substrates Modelling and simulation of fields Novel methods of multi-objective synthesis of antennas on special substrates ARTEMIS - Analytic Research of Threats in ElectroMagnetically Integrated Systems. Time-domain modeling of microwave structures
http://linked.open...UplatneniVysledku	2008
http://linked.open...iv/tvurceVysledku	Jilková, Jana Raida, Zbyněk
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2008-10-14 (xsd:date)
number of pages	4 (xsd:int)
http://purl.org/ne...btex#hasPublisher	University of Damascus
https://schema.org/isbn	9954-8577-0-2
http://localhost/t...ganizacniJednotka	26220
is http://linked.open...avai/riv/vysledek of	Determination of frequency response of complex permittivity by global optimization Determination of frequency response of complex permittivity by global optimization Determination of frequency response of complex permittivity by global optimization

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