Simulating of electromagnetic scattering from three impedance bodies

The problem of electromagnetic scattering from a structure consisting of three impedance bodies is solved in the resonance frequency range by means of the discrete sources method. The gist of the used method is the following. The unknown scattered field is represented as a sum of the fields of auxiliary elementary electric dipoles located on the auxiliary surfaces introduced inside each body. The form of auxiliary surface is similar to the form of body's surface, and electric dipoles are oriented tangentially to the auxiliary surfaces. The chosen representation of the scattered field satisfies to the Maxwell's equations and radiation conditions. To find the unknown dipole moments of the auxiliary dipoles we use the boundary conditions on the surfaces of the impedance bodies which are satisfied according to the collocation method. Based on the method described above we developed a computer code for calculating the scattered-field components. We present some results of scattering cross-section calculations for structure consisting of three ellipsoids characterized by different values of impedance for different angles of plane wave incidence.

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