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在“测试环”概念的基础上 ,提出了两种确定MEI系数的方法 .数值结果表明 ,利用电偶极子层激励作为测试子和自由空间格林函数作为积分核确定MEI系数的方法 ,比之其它方法具有更高的精度和明显的优点 .分析并总结了数值实验中出现的一些问题 ,使得对MEI方法的理解更深入了一步 .另外 ,对MEI方法的不稳定性和有效性也做了理论分析 .最后 ,利用本文方法计算了一个较为复杂的微带线参数 ,得到了满意的结果 .
Based on the concept of “test loop”, two methods to determine the MEI coefficient are proposed.The numerical results show that the method of using the dipole-layer excitation as the testing sub-kernel and the free space Green’s function as the integral kernel to determine the MEI coefficient, The other methods have higher accuracy and obvious advantages.Analyzing and summarizing some problems in numerical experiments, making the understanding of MEI method a step further.In addition, the instability and effectiveness of the MEI method has also been done Theoretical analysis.Finally, a more complicated microstrip line parameter is calculated by this method, and satisfactory results are obtained.