DocumentCode :
3348326
Title :
Exact radiation from an axial dipole antenna on a prolate metallic spheroid coated with layers of isorefractive and anti-isorefractive materials
Author :
Askarpour, Amir Nader ; Uslenghi, Piergiorgio L E
Author_Institution :
Dept. of ECE, Univ. of Illinois at Chicago, Chicago, IL, USA
fYear :
2010
fDate :
20-24 Sept. 2010
Firstpage :
71
Lastpage :
74
Abstract :
The geometry analyzed in this paper consists of a metallic prolate spheroid coated with confocal spheroidal layers of lossless materials whose refractive indexes are either equal (isorefractive) or opposite in sign (anti-isorefractive) to the refractive index of the medium surrounding the structure. The primary source is an electric dipole located on the axis of symmetry and axially oriented. The fields in the various regions are written as infinite series of products of radial and angular prolate spheroidal functions, and the modal expansion coefficients are determined exactly by imposing the boundary conditions, thus yielding a new canonical solution to a radiation problem. Numerical results are presented and discussed.
Keywords :
antenna radiation patterns; conformal antennas; dipole antennas; geometry; refractive index; angular prolate spheroidal function; anti-isorefractive material; axial dipole antenna; confocal spheroidal layer; electric dipole; geometry; isorefractive material; lossless material; modal expansion coefficient; prolate metallic spheroid coating; radial prolate spheroidal function; radiation problem; refractive index; Antenna radiation patterns; Coatings; Dipole antennas; Geometry; Metamaterials; Refractive index;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electromagnetics in Advanced Applications (ICEAA), 2010 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-7366-3
Type :
conf
DOI :
10.1109/ICEAA.2010.5652323
Filename :
5652323
Link To Document :
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