Multigrid Moment Method Analysis for the Scattering of Electromagnetic Wave by a Periodic Array

概要

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The scattering from a two-dimensional periodic array of dielectric cylinders using Multigrid MomentMethod is examined in this paper. The scattered field is expressed in terms of the integral form by an infinite summation of the surface integral over the cross section of the reference cylinder. The integral form is converted into the matrix equations of N linear independent unknowns by MoM. The lattice sums technique is used to evaluate the elements of the matrix equation. The Multigrid Method is applied to this matrix equation and Generalized Minimum Residual (GMRES) method is used as the relaxation method. The computational time and residual norm are examined for a given number of iteration and cycle index. The convergence condition is then investigated for 10 multigrid cycles. The numerical results shows the effect of high relative permittivity of the dielectric cylinder on both the total field distribution and the reflection coefficient for the fundamental Floquet mode of the periodic structure.
宮崎大学の論文
2008-08-30