Electromagnetic analysis of a non invasive microwave radiometry imaging system emphasizing on the focusing sensitivity optimization

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	2014-03-01T01:30:20Z
dc.date.available	2014-03-01T01:30:20Z
dc.date.issued	2009	en
dc.identifier.issn	1559-8985	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19550
dc.subject	Dielectric Properties	en
dc.subject	Electric Field	en
dc.subject	Electromagnetic Analysis	en
dc.subject	Focal Point	en
dc.subject	Imaging System	en
dc.subject	Left Handed Material	en
dc.subject	Microwave Radiometry	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Telecommunications	en
dc.subject.other	Conductive walls	en
dc.subject.other	Different frequencies	en
dc.subject.other	Electric field distributions	en
dc.subject.other	Electromagnetic analysis	en
dc.subject.other	Focal points	en
dc.subject.other	Focusing properties	en
dc.subject.other	Green's function techniques	en
dc.subject.other	Human head models	en
dc.subject.other	Human heads	en
dc.subject.other	Imaging configurations	en
dc.subject.other	Layered cylinders	en
dc.subject.other	Left-handed materials	en
dc.subject.other	Microwave radiometries	en
dc.subject.other	Non-invasive	en
dc.subject.other	Numerical codes	en
dc.subject.other	Receiver antennas	en
dc.subject.other	Semi-analytical	en
dc.subject.other	Sensitivity optimizations	en
dc.subject.other	Antennas	en
dc.subject.other	Cylinders (shapes)	en
dc.subject.other	Dielectric materials	en
dc.subject.other	Dielectric properties	en
dc.subject.other	Differential equations	en
dc.subject.other	Electric fields	en
dc.subject.other	Focusing	en
dc.subject.other	Imaging systems	en
dc.subject.other	Microwave antennas	en
dc.subject.other	Microwaves	en
dc.subject.other	Model structures	en
dc.subject.other	Optoelectronic devices	en
dc.subject.other	Radiometers	en
dc.subject.other	Radiometry	en
dc.subject.other	Green's function	en
dc.title	Electromagnetic analysis of a non invasive microwave radiometry imaging system emphasizing on the focusing sensitivity optimization	en
heal.type	journalArticle	en
heal.identifier.primary	10.2528/PIER09010803	en
heal.identifier.secondary	http://dx.doi.org/10.2528/PIER09010803	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	A Green's function based methodology has been developed and implemented with the view to optimize the focusing properties and thus the performance of a Microwave Radiometry Imaging System (MiRaIS). The system consists of an ellipsoidal conductive wall cavity and a sensitive radiometric receiver and its operation principal is based on the convergence of the radiation from one focal point, where the subject or phantom is placed, on the other, where the receiver antenna is positioned. A two-layered cylinder is used to model the human head with the semi-analytical Green's function technique. The imaging configuration is enhanced by different matching structures of various materials which are placed on the surface of both the human head model and the antenna inside the ellipsoidal. Numerical code executions have been realized and the results for the electric field distribution inside the head are presented for materials of various dielectric properties and for left handed materials at two different frequencies (0.5 GHz and 1.0 GHz). Increased sensitivity of the system focusing properties is observed using particular matching structures.	en
heal.publisher	E M W PUBLISHING	en
heal.journalName	Progress in Electromagnetics Research	en
dc.identifier.doi	10.2528/PIER09010803	en
dc.identifier.isi	ISI:000265388000025	en
dc.identifier.volume	90	en
dc.identifier.spage	385	en
dc.identifier.epage	407	en