Electromagnetic Scattering by Arbitrarily Shaped PEC Targets Coated with Anisotropic Media Using Equivalent Dipole-Moment Method |
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Authors: | Jiade Yuan Zhenyi Niu Zhuo Li Changqing Gu |
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Affiliation: | (1) College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People’s Republic of China; |
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Abstract: | The equivalent dipole-moment method (EDM) is extended and applied in the analysis of electromagnetic (EM) scattering by arbitrarily
shaped perfect electric conductor (PEC) targets coated with electric anisotropic media in this paper. The scattering targets
are discretized into tetrahedral volume elements in the material region and into triangle patches on the conducting surface,
where the volume-surface integral equation (VSIE) is set up. Then the method of moments (MoM) is employed to solve the VSIE.
In the impedance matrix, the near field interaction elements are computed by the conventional MoM while the far field interaction
elements are modeled by the EDM. The proposed approach is sufficiently versatile in handling arbitrarily shaped objects coated
with general electric anisotropic media and is easily constructed through a simple procedure. Numerical results are given
to demonstrate the accuracy and efficiency of this method. |
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