An improved accuracy version of the method of auxiliary sources for computational electromagnetics

Shubitidze, F; Anastassiu, HT; Kaklamani, DI

dc.contributor.author	Shubitidze, F	en
dc.contributor.author	Anastassiu, HT	en
dc.contributor.author	Kaklamani, DI	en
dc.date.accessioned	2014-03-01T01:19:54Z
dc.date.available	2014-03-01T01:19:54Z
dc.date.issued	2004	en
dc.identifier.issn	0018-926X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15754
dc.subject	Method of auxiliary sources (MAS)	en
dc.subject	Numerical techniques	en
dc.subject	Radiation	en
dc.subject	Scattering	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Telecommunications	en
dc.subject.other	Antenna radiation	en
dc.subject.other	Computer simulation	en
dc.subject.other	Electric fields	en
dc.subject.other	Electromagnetic wave scattering	en
dc.subject.other	Finite difference method	en
dc.subject.other	Green's function	en
dc.subject.other	Numerical methods	en
dc.subject.other	Dyadic Green function	en
dc.subject.other	Method of auxiliary sources	en
dc.subject.other	Electromagnetic field theory	en
dc.title	An improved accuracy version of the method of auxiliary sources for computational electromagnetics	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/TAP.2003.822422	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TAP.2003.822422	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	The method of auxiliary sources (MAS) is normally applicable to electromagnetic problems involving structures of significant thickness, so that an adequately large distance between source and collocation points is guaranteed. For thin or open geometries the accuracy of the method is depleted, due to numerical instabilities caused by the highly singular terms of the dyadic Green's function (DGF). In this paper a modified MAS (MMAS) is developed to circumvent this particular difficulty. Higher order terms of the DGF are numerically calculated by introducing a canonical grid, where derivatives can be accurately computed via a discrete scheme, unlike standard MAS, where the DGF analytical, problematic expression is invoked instead. This procedure is equivalent to the involvement of auxiliary currents and charges in the solution, instead of the elementary source fields used in standard MAS.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Antennas and Propagation	en
dc.identifier.doi	10.1109/TAP.2003.822422	en
dc.identifier.isi	ISI:000189269300034	en
dc.identifier.volume	52	en
dc.identifier.issue	1	en
dc.identifier.spage	302	en
dc.identifier.epage	309	en