A linear array constituted by a finite number of conducting cylinders is modelled via the conventional method of auxiliary sources (MAS). Initially, the global coupling relating cylinders permits the near and far fields calculation. Finally, taking into account partial coupling describing neighbouring cylinders leads to a partially filled matrix, so therefore the computational cost is significantly reduced. Global and partial coupling reveals the same results for the chosen arrays.

Abstract-In this paper, an electromagnetic model based upon the method of auxiliary sources is developed around multilayered structures without any restriction of physical and geometrical macroscopic parameters.Thus, the multilayered structure is considered as a superposition of a finite number of strongly coupled and recovered layers. The extended method of auxiliary sources EMAS is tested for a dielectric shell, a multilayered dielectric cylinder for different medium conductivities and a conducting cylinder coated with a dielectric or a metamaterial. Furthermore, we validate that the coupling between far layers can be neglected for lossy mediums. Numerical results computed in this paper reveal the validity and the accuracy of the aforementioned model in comparison with moment and hybrid methods.

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Abstract-This paper establishes the extension of the method of auxiliary sources EMAS for the purpose of modeling the electromagnetic scattering response by jacket cylindrical structures constituted by a finite number of dielectric eccentric cylindrical inclusions embedded in a host dielectric one. Appropriate boundary conditions mixed with judicious decomposed domains leads to the prediction of the backscattering cross section. The algorithm also integrates the global electromagnetic coupling between the inclusions. The EMAS is validated by varying the inner cylinders repartitions and fine-tuning the electric permittivity according to different geometries. The EMAS level of accuracy compared with the indirect matching mode method IMM reveals a good agreement between the numerical computation results.