Reflection coefficient of harrow grating with conductor strips with respect to electromagnetic waves

The reflection coefficient of harrow microwave gratings with conductors on a metal mirror base is calculated by a method not only more accurate but also less unwieldy than the conventional method of partial regions. Bar conductors of finite thickness are replaced with ribbon conductors of a form approximately describable by 0o-functions, which taper them to infinitesimally thin ones and thus reduces the three-dimensional grating to a two-dimensional one. The effective conductor thickness is now much smaller than the grating period and than the skin depth. Both reflection and absorption coefficients become independent of the frequency, and the transcendental dispersion equation for the propagation constant simplify as a result of easier solution by numerical methods. With the absorption layer superposable on the dispersion layer, the reflection factor is calculated specifically for waves with E-polarization, by reduction of the corresponding diffraction problem to an infinite system of linear algebraic equations.