Diffraction of a plane wave by a thin material strip: solution by the analytical-numerical approach

Abstract

The plane wave diffraction by a thin material strip is analyzed for both E and H-polarizations using a new analytical-numerical approach together with approximate boundary conditions. The problem is reduced to the solution of infinite systems of linear algebraic equations. The final results are valid provided that the thickness of the strip is small compared with the wavelength. The scattered field is evaluated asymptotically and a far field expression is derived. Illustrative numerical examples on the radar cross section are presented and the far field scattering characteristics are discussed. Some comparisons with the other existing method are also given.