Coupling phenomena in concentric multi-applicator phased array hyperthermia systems

Nikita, KS; Uzunoglu, NK

dc.contributor.author	Nikita, KS	en
dc.contributor.author	Uzunoglu, NK	en
dc.date.accessioned	2014-03-01T01:11:48Z
dc.date.available	2014-03-01T01:11:48Z
dc.date.issued	1996	en
dc.identifier.issn	0018-9480	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11822
dc.subject	Boundary Condition	en
dc.subject	Cross Section	en
dc.subject	Electric Field	en
dc.subject	Integral Equation	en
dc.subject	Mutual Coupling	en
dc.subject	Normal Modes	en
dc.subject	Phased Array	en
dc.subject	Reflection Coefficient	en
dc.subject	Satisfiability	en
dc.subject	Wave Equation	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.other	ABSORBED POWER DISTRIBUTIONS	en
dc.subject.other	REGIONAL HYPERTHERMIA	en
dc.subject.other	MODEL	en
dc.subject.other	OPTIMIZATION	en
dc.title	Coupling phenomena in concentric multi-applicator phased array hyperthermia systems	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/22.481386	en
heal.identifier.secondary	http://dx.doi.org/10.1109/22.481386	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	The coupling between the waveguide applicators of a four-element phased array hyperthermia system irradiating a three-layered cylindrical tissue model of circular cross section is analyzed theoretically. The fields inside the tissue layers are expressed in terms of cylindrical vector wave functions satisfying the corresponding wave equations, while the fields inside each waveguide are expanded in terms of guided and evanescent normal modes. Then, by implementing the appropriate boundary conditions, a system of four coupled integral equations is derived in terms of the unknown electric field distributions on the open waveguide apertures. This system is solved by expanding the unknown electric field on each aperture into waveguide normal modes and by applying a Galerkin's procedure. The self reflection coefficient and the mutual coupling coefficients are then determined and numerical results for a four-element phased array hyperthermia system are computed and presented for different waveguide applicator sizes and settings. © 1996 IEEE.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Microwave Theory and Techniques	en
dc.identifier.doi	10.1109/22.481386	en
dc.identifier.isi	ISI:A1996TQ35400010	en
dc.identifier.volume	44	en
dc.identifier.issue	1	en
dc.identifier.spage	65	en
dc.identifier.epage	74	en