Inverse medium problems for spherical scatterers in the low-frequency region

Tsitsas, NL

dc.contributor.author	Tsitsas, NL	en
dc.date.accessioned	2014-03-01T02:47:23Z
dc.date.available	2014-03-01T02:47:23Z
dc.date.issued	2011	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33112
dc.subject	Low Frequency	en
dc.subject.other	Closed form	en
dc.subject.other	Dielectric permittivities	en
dc.subject.other	Dielectric spheres	en
dc.subject.other	Electromagnetic excitations	en
dc.subject.other	Inverse medium scattering	en
dc.subject.other	Inverse scattering problems	en
dc.subject.other	Low frequency	en
dc.subject.other	Low frequency regions	en
dc.subject.other	Magnetic dipole	en
dc.subject.other	Near-field	en
dc.subject.other	Near-field expansion	en
dc.subject.other	Quantity of interest	en
dc.subject.other	Biomedical engineering	en
dc.subject.other	Electric excitation	en
dc.subject.other	Electric fields	en
dc.subject.other	Electromagnetism	en
dc.subject.other	Scattering	en
dc.subject.other	Spheres	en
dc.subject.other	Inverse problems	en
dc.title	Inverse medium problems for spherical scatterers in the low-frequency region	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/ICEAA.2011.6046512	en
heal.identifier.secondary	http://dx.doi.org/10.1109/ICEAA.2011.6046512	en
heal.identifier.secondary	6046512	en
heal.publicationDate	2011	en
heal.abstract	The interior low-frequency dipole excitation of a spherical scatterer is motivated by various applications, arising mainly in biomedical engineering. In this paper, we investigate the near-field direct and inverse scattering problem corresponding to the interior electromagnetic excitation of a dielectric sphere by a magnetic dipole. The near-field quantity of interest is the secondary electric field at the dipole's location, which is, under the low-frequency assumption, expressed in closed form. Then, this derived low-frequency near-field expansion is utilized in the development of a simple inverse medium scattering algorithm concerning the determination of the sphere's dielectric permittivity. © 2011 IEEE.	en
heal.journalName	Proceedings - 2011 International Conference on Electromagnetics in Advanced Applications, ICEAA'11	en
dc.identifier.doi	10.1109/ICEAA.2011.6046512	en
dc.identifier.spage	1148	en
dc.identifier.epage	1151	en