A hybrid technique for combining moment methods with the geometrical theory of diffraction
Abstract
A technique for combining moment methods with the geometrical theory of diffraction is presented, which permits the application of the method of moments to a larger class of problems. The fundamental idea used to develop the hybrid technique is to modify the usual impedance matrix that characterizes, for example, a wire antenna so that a metallic body or discontinuity on that body is properly accounted for. It is shown that, in general, it is possible to modify the impedance matrix for any basis and/or weighting functions if the correct modification to the impedance matrix element can be computed. The modification is readily accomplished using the geometrical theory of diffraction and/or geometrical optics.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 January 1975
 DOI:
 10.1109/TAP.1975.1141004
 Bibcode:
 1975ITAP...23...62T
 Keywords:

 Antenna Design;
 Electrical Impedance;
 Monopole Antennas;
 Wave Diffraction;
 Circular Plates;
 Electric Wire;
 Frequency Response;
 Matrices (Mathematics);
 Performance Tests;
 Ring Currents;
 Signal Measurement;
 Wave Reflection;
 Communications and Radar