A technique to combine the geometrical theory of diffraction and the moment method

A technique is presented in which the moment method (MM) is combined with the geometrical theory of diffraction (GTD). Since diffraction solutions exist for only relatively few structures, it is very desirable to have a means of obtaining the diffracted field for additional structures. Solutions for many structures can be obtained from this combination of techniques, and thus one is able to handle a wide variety of new problems which could not have been solved previously. The approach is developed and applied to a variety of structures in order to illustrate the approach and its validity.