DocumentCode :
1509969
Title :
Image theory for electromagnetic sources in chiral medium above the soft and hard boundary
Author :
Lindell, Ismo V.
Author_Institution :
Electromagn. Lab., Helsinki Univ. of Technol., Espoo, Finland
Volume :
49
Issue :
7
fYear :
2001
fDate :
7/1/2001 12:00:00 AM
Firstpage :
1065
Lastpage :
1068
Abstract :
The classical image theory valid for electromagnetic (EM) sources in an isotropic medium above a planar perfect electric conductor (PEC) or perfect magnetic conductor (PMC) surface was extended to involve the planar soft-and-hard surface (SHS) boundary that can be realized with tuned corrugations. The image principle is now generalized to EM sources in isotropic chiral medium above an SHS boundary. The problem is solved by two consecutive decompositions of the sources reducing the problem to four classical ones involving electric and magnetic sources above PEC and PMC boundaries; each involving an isotropic nonchiral medium and possessing a known image solution. One of the decompositions is based on the fact that the two eigenwaves of a chiral medium do not couple at a soft-and-hard surface; and, the other one, on the eigenpolarizations of the reflection dyadic
Keywords :
chirality; conducting bodies; eigenvalues and eigenfunctions; electromagnetic coupling; electromagnetic fields; electromagnetic wave polarisation; electromagnetic wave reflection; EM sources; eigenpolarizations; eigenwaves; electric dipoles; electric sources; electromagnetic sources; hard boundary; image theory; isotropic chiral medium; isotropic medium; isotropic nonchiral medium; magnetic dipoles; magnetic sources; perfect magnetic conductor; planar perfect electric conductor; planar soft-and-hard surface; reflection dyadic; self-dual fields coupling; soft boundary; source decomposition; tuned corrugations; Conductors; Corrugated surfaces; Electromagnetic propagation; Electromagnetic radiation; Electromagnetic wave polarization; Horn antennas; Impedance; Mirrors; Reflection; Transmission lines;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/8.933486
Filename :
933486
Link To Document :
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