Solution of Diffraction Problems Using the Methods of Extended Boundary Conditions and Discrete Sources

摘要

The method of extended boundary conditions (MEBC) is generalized to 3D wave diffraction problems. The algorithm of the method is implemented using the discrete-source technique. The error of the MEBC solution is estimated for the model problem of diffraction of a plane wave from a prolate spheroid. A new wavelet-based technique is proposed for calculation of the Vasil'ev S functions involved in the analysis of wave diffraction from bodies of revolution. Wave diffraction from compact bodies and excitation of thin-screen reflector antennas, including antennas of electrically large dimensions, are numerically investigated.