Application of the Method of Moments with RWG Basis Functions in Problems of Diffraction by Plates with Similar Geometries
Tóm tắt
The problem of electromagnetic wave diffraction by metal plates with a complex geometry close to simpler domains is considered. The numerical solution of the problem is obtained by the method of moments using the algorithm for cutting out subdomains from the initial simple domain. Classical RWG functions are used as basic and test functions. The analysis of the influence of the area and position of the notch on the change in the expansion vector in terms of RWG functions is carried out. Numerical results are presented for plates with cutouts of various shapes and sizes for the case of normal incidence of a plane-polarized wave and the case of a more complex source distribution on the plate. It is shown that the difference in solutions for problems of diffraction by plates with similar geometry depends on how large currents are excited on the missing metal part. The proposed approach can be used for faster design of electrodynamic objects with complex geometry.
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