Infinite periodic grating with one strip removed in the case of small strips width relative to the period

Abstract

Diffraction of the E- polarized wave by the infinite periodic grating without one strip in the assumption of small strips width as compared to the period is considered in this paper. The current on the strips is represented as a sum of the currents of the infinite periodic grating and the correction current. The scattered field is found in the form of the simple-layer potential with unknown coefficients. These coefficients correspond to the average current density on the strips. For their determination the integral equations are obtained. The dependencies of the correction field vs. coordinates are represented.