体面积分方程（VSIE）分析任意复杂频率选择结构

本文提出了一种空域体面积分方程( VSIE)分析频率选择结构的方法。 VSIE可以分析任意复杂结构，包括非均匀介质或金属与介质复合问题。利用Ewald变换可加速自由空间周期格林函数( PGF)的收敛。由于自由空间PGF相对平滑，适合用于插值计算。数值仿真结果验证了本文方法的可靠性与精确性。

Volume-surface Integral Equation for the Analysis of Arbitrarily Complex Frequency Selection Structures

In this paper,we present the space-domain volume-surface integral equation ( VSIE) meth-od for the analysis of frequency selective structures ( FSS ) . VSIE is used to analyze complicated FSS structure involved inhomogeneous dielectric or composite metallic and dielectric. The computation of the spatial domain periodic Green’ s function ( PGF) is accelerated by the Ewald transformation. The free-space PGF is very smooth and amenable to interpolation,resulting in a considerable reduction of matrix-filling time without any significant effect on the accuracy. Numerical examples show the reliability and ac-curacy of the proposed method.