The effective impedance tensor of a statistically rough interface between two media
Abstract
The reflection of plane electromagnetic waves from a statistically rough interface between two media with different electrodynamic properties is analyzed from the standpoint of perturbation theory. An effective impedance tensor is obtained which relates the tangential components of the mean electric and magnetic fields in the first medium at an undisturbed plane interface, with allowance made for mean field depolarization as a result of the anisotropy of the spatial spectrum of the roughness. It is shown that the effective surface impedance tensor can be determined from the spatial spectrum of the roughness if the external physical characteristics of the undisturbed interface (i.e., the Fresnel coefficients of reflection or transmission and the discontinuity of the material parameters at the interface) are known.
- Publication:
-
Akademiia Nauk Ukrains koi RSR Dopovidi Seriia Fiziko Matematichni ta Tekhnichni Nauki
- Pub Date:
- March 1986
- Bibcode:
- 1986DoUkr.......61Z
- Keywords:
-
- Electrical Impedance;
- Electromagnetic Scattering;
- Solid-Solid Interfaces;
- Surface Roughness Effects;
- Tensors;
- Wave Diffraction;
- Anisotropic Media;
- Depolarization;
- Electrodynamics;
- Fresnel Diffraction;
- Perturbation Theory;
- Stochastic Processes;
- Communications and Radar