Abstract: The transmission of the electromagnetic wave with plane wave incidence on a rough surface of a layered medium is studied and the transmission coefficient for different polarizations is obtained by using the small perturbation method combined with the power spectral density of 1D band-limited Weierstrass fractal rough surface. A 1D band-limited Weierstrass fractal rough surface is proposed for describing the natural rough surface of the layered medium. The curves of the transmission coefficient of the HH polarization with various scattering angles of the transmission wave, the fractal characteristics, the basic characteristics, the zonal characteristics and the characteristics with various frequencies of the transmission coefficient from 1D band-limited Weierstrass fractal rough surface for different polarizations are obtained by numerical calculation. The numerical results show that the fractal dimension, special fundamental frequency, scale interval, the permittivity of the substrate medium, the permittivity and the mean layer thickness of the intermediate medium, the rms and the correlation length of the rough surface, and the incident frequency have a very complicated influence on the transmission coefficient.
|
Received: 02 November 2009
|
|
|
|