Enhancement of the focusing properties of a passive radiometry imaging system: A theoretical electromagnetic study

Giamalaki, MI; Karanasiou, IS; Uzunoglu, NK

dc.contributor.author	Giamalaki, MI	en
dc.contributor.author	Karanasiou, IS	en
dc.contributor.author	Uzunoglu, NK	en
dc.date.accessioned	2014-03-01T02:44:36Z
dc.date.available	2014-03-01T02:44:36Z
dc.date.issued	2007	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/31897
dc.subject	Dielectric Properties	en
dc.subject	Electric Field	en
dc.subject	Imaging System	en
dc.subject	Penetration Depth	en
dc.subject	Theoretical Analysis	en
dc.subject.other	Antenna accessories	en
dc.subject.other	Dielectric properties	en
dc.subject.other	Digital image storage	en
dc.subject.other	Electric fields	en
dc.subject.other	Electric network analysis	en
dc.subject.other	Electromagnetic field theory	en
dc.subject.other	Electromagnetic fields	en
dc.subject.other	Imaging systems	en
dc.subject.other	Imaging techniques	en
dc.subject.other	Magnetism	en
dc.subject.other	Optoelectronic devices	en
dc.subject.other	Radiometry	en
dc.subject.other	Receiving antennas	en
dc.subject.other	Advanced applications	en
dc.subject.other	Electric field distributions	en
dc.subject.other	Electro magnetics	en
dc.subject.other	Electromagnetic (EM)	en
dc.subject.other	Focusing properties	en
dc.subject.other	Head modeling	en
dc.subject.other	International conferences	en
dc.subject.other	New approaches	en
dc.subject.other	Non-invasive imaging	en
dc.subject.other	Numerica l results	en
dc.subject.other	Operating frequencies	en
dc.subject.other	Passive radiometry	en
dc.subject.other	Penetration depths	en
dc.subject.other	Spatial accuracy	en
dc.subject.other	Two layers	en
dc.subject.other	Electromagnetism	en
dc.title	Enhancement of the focusing properties of a passive radiometry imaging system: A theoretical electromagnetic study	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/ICEAA.2007.4387480	en
heal.identifier.secondary	http://dx.doi.org/10.1109/ICEAA.2007.4387480	en
heal.identifier.secondary	4387480	en
heal.publicationDate	2007	en
heal.abstract	A non-invasive imaging system, consisting of an ellipsoidal conductive cavity and radiometric receivers, designed and constructed in our laboratory the past few years is restudied. A means for further improvement of the ellipsoidal reflector's focusing properties thus its performance is herein investigated. The main differentiating factor of our new approach is that the receiving antenna is more realistically modelled and also covered by two layers of different dielectric properties. The present paper provides details on the electromagnetic theoretical analysis of the problem and presents numerical results for the electric field distribution inside the head model, using two main operating frequencies, namely 0.5GHz and 1.5GHz for four distinct cases. The focusing optimization of the system in terms of spatial accuracy and penetration depth is assessed while the method and results are also separately validated. © 2007 IEEE.	en
heal.journalName	2007 International Conference on Electromagnetics in Advanced Applications, ICEAA'07	en
dc.identifier.doi	10.1109/ICEAA.2007.4387480	en
dc.identifier.spage	1018	en
dc.identifier.epage	1021	en