Gerneralized Effective Impedance Boundary Conditions for an Imhomogeneous Thin Layer in Electromagnetic Scattering
- 1 January 1997
- journal article
- Published by Taylor & Francis in Journal of Electromagnetic Waves and Applications
- Vol. 11 (9) , 1197-1212
- https://doi.org/10.1163/156939397x01106
Abstract
Generalized effective impedance boundary conditions for an inhomogeneous thin layer coated on a perfectly conducting plane are considered. The first order and second order approximate impedance boundary conditions are derived first for a two-dimensional thin layer with TE plane wave incidence through an asymptotic expansion in power series of the thickness. Numerical results show that the second order boundary condition gives a sufficient accuracy for all incident angles. A rigorous derivation for the case of Maxwell's equations for a three-dimensional inhomogeneous thin layer is also given.Keywords
This publication has 5 references indexed in Scilit:
- Wave-Splitting Approach To a Scattering Problem for a Laterally Periodic Inhomogeneous StructureJournal of Electromagnetic Waves and Applications, 1997
- The Effect of a Thin Coating on the Scattering of a Time-Harmonic Wave for the Helmholtz EquationSIAM Journal on Applied Mathematics, 1996
- Diffraction at a Curved Grating: TM and TE Cases, HomogenizationJournal of Mathematical Analysis and Applications, 1996
- Approximate Boundary Conditions in ElectromagneticsPublished by Institution of Engineering and Technology (IET) ,1995
- An impedance sheet approximation for thin dielectric shellsIEEE Transactions on Antennas and Propagation, 1975