电磁屏蔽系数快速算法用于多面开孔屏蔽腔研究

Application of electromagnetic shielding effectiveness fast algorithms for cavities with multiple apertures

本文介绍了三种开孔矩形金属腔屏蔽系数快速计算方法的基本理论,总结了三种快速算法的优缺点及适用性,并在此基础上对TLM和Modal-MOM算法应用进行扩展,实现了腔体相对面及相邻面开孔屏蔽系数的计算。将TLM和Modal-MOM算法用于腔体相对面、相邻两面、相邻三面开孔时腔体中心处的屏蔽系数的计算,结果与CST仿真结果进行对比,证明了这些扩展算法的有效性。

The basic theory of three fast algorithms(transmission line model-TLM, intermediated level cir cuit model-ILCM and modal b ased method of moments-M odal MOM) for shielding effectiveness(SE) calculation is introduced br iefly and their characteristics and ap p licability are summarized in this p ap er. Based on it, the TLM and M odal-MOM methods are extended to calcu late SE of a rectan gular cavity with ap ertures at the opp osite walls and adjacent walls resp ectively. Results are comp ared to the CST simulated ones, and the accordan ce bet ween them demonstrate the validity of the calculations.