SCATTERING OF AN ARBITRARILY ORIENTED DIPOLE FIELD BY A CIRCULAR DISK WITH SURFACE IMPEDANCE

The scattering of an arbitrarily oriented dipole field by a circular disk with surface impedance is investigated by using the method of Kobayashi Potential (KP method). The dual integral equations (DIE) are produced during formulation of the problem. The solution of the DIEs is constructed in terms of set of functions which satisfy the boundary conditions as well as required edge conditions. At this stage, we applied the discontinuous properties of Weber Schafheitlins integral and vector Hankel transform. After applying the projection, the resulting expressions are reduced to the matrix equations for the expansion coefficients. The matrix elements are given in terms of the infinite integrals. The far field patterns for the scattered wave are computed for different incident angles, disk sizes and surface impedances for ρ−, Φ− and z−directed dipole field excitation. To validate the results we have obtained the results based on the physical optics approximation and their comparison shows that they quite reasonably match.