Scattering Properties Prom a Two-Dimensional Multilayered Periodic Structure

摘要

任意形状した物体が多層周期配置された場合の散乱特性について，数値的に検討を行っている．計算手法rnはモーメント法，格子総和法，マルチグリッド法を用い，多層構造については各層間での位相シフト量を考慮に入れrnている．本報告では，電界成分が円柱柱軸方向に偏渡しているTM波を取り扱っている．誘電率，円柱の大きさなどrnが変化した場合の反射係数について，検討している．%Scattering of electromagnetic wave from a two-dimensional multilayered periodic structure is presented using Moment Method together with Lattice Sums and Phase Shift Correction Method between inter faces. The mul tilayered structure consists of dielectric circular cylinders. In this study, the TM wave whose electric field is parallel to the cylindrical axis is analyzed and the effect of permittivity, size of the cylinder and the spacing between layer on the reflectance and transmittance shall be investigated. The numerical results also show the wavelength responses of the multilayer arrays of composite dielectric cylinders.