Realization of Impedance Boundary

Author

Lindell, Ismo V. ; Sihvola, Ari H.

Author_Institution

Electromagn. Lab., Helsinki Univ. of Technol., Espoo

Volume

54

Issue

12

fYear

2006

Firstpage

3669

Lastpage

3676

Abstract

Impedance boundary is generally considered as an approximate model for material interfaces. Considering an electromagnetic field in a certain wave-guiding anisotropic material it is shown that a slab of such a material backed by a perfect electric conductor (PEC) plane can be exactly represented by impedance-boundary conditions. As a result of the analysis, a novel explicit relation is derived between the surface admittance dyadic of the impedance boundary and the material and geometric parameters of the anisotropic slab which can be used to realize a given admittance dyadic. The relation is verified with results known for the perfect electromagnetic (PEMC) boundary and bi-axial material, considered as special cases of the theory

Keywords

anisotropic media; boundary-value problems; conducting bodies; electric admittance; electromagnetic fields; surface impedance; IBC; PEC plane; PEMC boundary; anisotropic slab; biaxial material; electromagnetic field; geometric parameter; impedance boundary condition; material interfaces; perfect electric conductor; perfect electromagnetic; surface admittance dyadic; wave-guiding anisotropic material; Admittance; Anisotropic magnetoresistance; Conducting materials; Corrugated surfaces; Electromagnetic fields; Magnetic materials; Slabs; Surface impedance; Surface treatment; Two dimensional displays; Boundary conditions; electromagnetics; impedance boundary;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2006.886535

Filename

4020408