抄録
Plane wave diffraction by a semi-infinite strip grating is analyzed in order to investigate the end-effect of finite gratings in pure form. In the formulation, the current induced on each strip is divided into periodic current on an infinite strip grating and the correction current induced by the truncation of the periodic structure. These currents are determined by solving a set of integral equations by using the method of moment. Numerical calculations for current distribution, diffraction patterns, and norm of the induced correction currents reveal the end-effects of the semi-infinite grating.
