Scattering by an infinite wedge with tensor impedance boundary conditions  A moment method/physical optics solution for the currents
Abstract
Plane wave scattering by an infinite, twodimensional wedge whose faces are characterized by impedance tensors is discussed. A combination of the moment method (MM) and physical optics (PO) is used to obtain a solution for the equivalent electric currents. The currents near the edge on each face are expanded with a set of basis functions consisting of pulse functions, defined on a meshed region, plus a function spanning the whole face. The currents outside the meshed region are taken to be the sum of the physical optics currents, taken to be known, plus the wholeface basis function current. Expressing the equivalent magnetic currents in terms of the electric currents through the impedance tensors, the expansion coefficients for the electric current expansion are determined through an MM solution of the magnetic field integral equation. Sample results for wedges with isotropic and anisotropic face impedances are presented.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 June 1991
 DOI:
 10.1109/8.86874
 Bibcode:
 1991ITAP...39..767B
 Keywords:

 Electric Current;
 Electrical Impedance;
 Method Of Moments;
 Physical Optics;
 Plane Waves;
 Wave Scattering;
 Anisotropy;
 Computer Programs;
 Isotropy;
 Wedges;
 Communications and Radar