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从关于介质极化电流的积分方程出发,用矩量法数值分析了矩形波导中沿E面均匀的任意截面形状和数量的介质柱的散射特性。将介质区域分割成许多矩形小子域,使以矩形波导修正格林函数为核的积分方程能够分区地进行解析处理,从而大大改善了计算精度和速度。计算中考虑了高次模的影响,既提高了计算精度,又提供了所有波型的散射信息。
Based on the integral equation about the polarization current of the medium, the scattering characteristics of the dielectric column with arbitrary cross-section shape and number along the E-plane in a rectangular waveguide are analyzed numerically. The medium region is divided into a number of small rectangular subdomains, so that the integral equation with the rectangular waveguide modified Green’s function as the nucleus can be partitioned and analyzed, thereby greatly improving the calculation precision and speed. In the calculation, the influence of higher modes is considered, which not only improves the calculation accuracy but also provides the scattering information of all waveforms.