Scattering by Periodic Metal Surfaces with Sinusoidal Height Profile - A New Theoretical Approach

A new theory of scattering by periodic metal surfaces is presented. The approach reduces the scatter problem to solving a linear system whose coefficients are obtained in closed form. The theory is thus amenable to efficient computer evaluation. Numerical results have shown that for depth of grooves less than a wavelength and for unrestricted groove widths reliable and comparable, if not more accurate, data is obtained at minimal computational cost.