论文标题
具有弱形式组合源条件的组合源积分方程
A Combined Source Integral Equation with Weak Form Combined Source Condition
论文作者
论文摘要
组合源积分方程（CSIE）是根据电场积分方程（EFIE）构建的，以求解包含完美电力导电物体的电磁辐射和散射问题。对于电流和磁表面电流密度，它仅通过Rao-Wilton-Glisson基础函数离散。合并的源条件可确保解决方案的独特性并规避内部共振问题，被实现为弱形式的侧面条件。与普通的组合积分方程相比，提出的CSIE显示出尖锐边缘以及内部共振问题的结构的卓越精度。此外，CSIE的迭代求解器的收敛速度比EFIE快得多，EFIE显示出与CSIE的精度大致相同。给出了数值散射模拟的结果，以证明所提出的CSIE的准确性。
A combined source integral equation (CSIE) is constructed on the basis of the electric field integral equation (EFIE) to solve electromagnetic radiation and scattering problems containing perfect electrically conducting bodies. It is discretized with Rao-Wilton-Glisson basis functions only, for both electric and magnetic surface current densities. The combined source condition, which ensures the uniqueness of the solution and circumvents the interior resonance problem, is implemented as a weak form side condition. Compared to the common combined field integral equation, the proposed CSIE shows superior accuracy for sharp edges as well as structures with the interior resonance problem. Furthermore, the iterative solver convergence of the CSIE is faster than for the EFIE, which shows about the same accuracy as the CSIE. Results of numerical scattering simulations are presented to demonstrate the accuracy of the presented CSIE.
