Electromagnetic scattering by a metallic spheroid using shape perturbation method

Kotsis, AD; Roumeliotis, JA

dc.contributor.author	Kotsis, AD	en
dc.contributor.author	Roumeliotis, JA	en
dc.date.accessioned	2014-03-01T01:26:17Z
dc.date.available	2014-03-01T01:26:17Z
dc.date.issued	2007	en
dc.identifier.issn	1559-8985	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17983
dc.subject	Cross Section	en
dc.subject	Eigenvectors	en
dc.subject	Electromagnetic Field	en
dc.subject	Electromagnetic Scattering	en
dc.subject	Electromagnetic Waves	en
dc.subject	Perturbation Method	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Telecommunications	en
dc.subject.other	PROLATE SPHEROIDS	en
dc.subject.other	PLANE-WAVES	en
dc.subject.other	ECHO AREA	en
dc.subject.other	EIGENFREQUENCIES	en
dc.title	Electromagnetic scattering by a metallic spheroid using shape perturbation method	en
heal.type	journalArticle	en
heal.identifier.primary	10.2528/PIER06080202	en
heal.identifier.secondary	http://dx.doi.org/10.2528/PIER06080202	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The scattering of a plane electromagnetic wave by a perfectly conducting prolate or oblate spheroid is considered analytically by a shape perturbation method. The electromagnetic field is expressed in terms of spherical eigenvectors only, while the equation of the spheroidal boundary is given in spherical coordinates. There is no need for using any spheroidal eigenvectors in our solution. Analytical expressions are obtained for the scattered field and the scattering cross-sections, when the solution is specialized to small values of the eccentricity h = d/( 2a), ( h << 1), where d is the interfocal distance of the spheroid and 2a the length of its rotation axis. In this case exact, closed-form expressions, valid for each small h, are obtained for the expansion coefficients g(( 2)) and g(( 4)) in the relation S( h) = S( 0)[ 1 + g(( 2)) h(2) + g(( 4)) h(4) + O( h(6))] expressing the scattering cross-sections. Numerical results are given for various values of the parameters.	en
heal.publisher	E M W PUBLISHING	en
heal.journalName	Progress in Electromagnetics Research	en
dc.identifier.doi	10.2528/PIER06080202	en
dc.identifier.isi	ISI:000245488600004	en
dc.identifier.volume	67	en
dc.identifier.spage	113	en
dc.identifier.epage	134	en