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采用矩量法面积分方程(SIE)分析波导缝隙天线阵问题时,由于矩量法中缺少理想吸收边界的概念,所以难以模拟匹配负载,行波天线的计算比较困难。同时大型天线的仿真计算非常耗时。针对这些问题,本文通过基于孔径耦合的等效原理和波导的模式匹配法构造出矩量法中的波端口模型。通过波端口模拟的匹配负载实现了行波天线的准确计算。另一方面通过引入并行计算技术,以超级计算机为平台实现了大型波导缝隙天线阵的快速仿真计算。与商业软件计算结果的对比验证了该方法的正确性和高效性。
When using MoE method to analyze waveguide slot antenna array, it is difficult to simulate matching load due to the lack of ideal absorption boundary concept in moment method, so it is difficult to calculate traveling wave antenna. At the same time the simulation of large antenna is very time-consuming. In order to solve these problems, this paper constructs the wave port model in the method of moment by the equivalent principle based on aperture coupling and the pattern matching method of waveguide. The accurate calculation of traveling wave antenna is realized by the matched load simulated by wave port. On the other hand, through the introduction of parallel computing technology, supercomputer as a platform to achieve a large waveguide slot antenna array fast simulation. Compared with the calculation results of commercial software, the correctness and high efficiency of this method are verified.