Diffraction by a wide double wedge with rounded edges

The multiple diffraction by two conducting wedges with rounded edges is investigated, using an expression for the scattered field of a plane wave incident on a single wedge with rounded edge derived by Ross and Hamid, as well as the technique proposed by Karp and Keller for the diffraction by a slit in an infinite screen. Numerical results for the diffraction pattern, transmission coefficient and the effect of rounding are also presented. It is shown that small rounding of the two edges decreases the transmission coefficient for large separation distances between the wedges.