Scattering from a PEC Slightly Rough Surface in Chiral Media

Abstract EN

The scattering of left circularly polarized wave from a perfectly electric conducting (PEC) rough surface in isotropic chiral media is investigated.

Since a slightly rough interface is assumed, the solution is obtained using perturbation method.

Zeroth-order term corresponds to solution for a flat interface which helps in making a comparison with the results reported in the literature.

First-order term gives the contribution from the surface perturbations, and it is used to define incoherent bistatic scattering coefficients for a Gaussian rough surface.

Higher order solution is obtained in a recursive manner.

Numerical results are reported for different values of chirality, correlation length, and rms height of the surface.

Diffraction efficiency is defined for a sinusoidal grating.