Skew incidence on a material junction

The solution is determined for the problem of a plane wave at skew incidence on the junction of two coplanar resistive half planes. Using duality and the fact that coplanar electric and magnetic current sheets do not interact, it is then shown that for any pair of half planes subject to first‐order transition or boundary conditions, the diffracted field can be expressed in terms of the diffracted field for the resistive half planes.