Closed-form solution for a line source at the edge of an isorefractive wedge

A closed-form solution is given for the radiation of an electric or magnetic line source located at the edge of an isorefractive wedge. The solution is valid for any wedge angle if the line source is isotropic. For certain nonisotropic line sources, the solution is valid only if the wedge angle is commensurable to /spl pi/ radians.