物理学报Issue(23)：1-10,10.DOI:10.7498/aps.63.234101
电大开孔箱体屏蔽效能分析解析模型∗
Formulation for shielding effectiveness analysis of a rectangular enclosure with an electrically large ap erture
摘要
Abstract
Since electric components and printed circuit board in the enclosure can be destroyed by electromagnetic pulse weapons through “front door and back door” coupling, which is a great threat to the operational security, the study of the shielding effectiveness is of important significance. A formulation for shielding effectiveness analysis of a rectangular enclosure with an electrically large aperture is proposed in this paper. Firstly, the plane wave with oblique incidence and polarization is decomposed. Secondly, based on the Cohn model, the equivalent electric and magnetic dipole of the electrically large aperture is computed. Thirdly, the total Hertz electric and magnetic vector potential is obtained through mirror procedure. Finally, the electric field inside an enclosure with electrically large aperture is formulated, which is used for shielding effectiveness calculation. Five verification experiments are designed. Simulation result shows that the mean square error and absolute error of this method compared to computer simulation technology (CST) microwave studio are 11.565 dB and 8.015 dB respectively, the correlation coefficient is 0.921, through which the accuracy of this method is verified. The simulation time of this method is 0.183 s, which is only 1/7530 times of CST, so its efficiency is obvious.关键词
Bethe小孔耦合理论/等效偶极子/镜像原理/格林函数Key words
Bethe’s slot coupling theory/equivalent dipole/mirror procedure/Green’s function引用本文复制引用
张亚普,达新宇,祝杨坤,赵蒙..电大开孔箱体屏蔽效能分析解析模型∗[J].物理学报,2014,(23):1-10,10.基金项目
国家自然科学基金(批准号:61271100,61271250)、陕西省自然科学基础研究重点项目(批准号:2010JZ010)和通信网信息传输与分发技术重点实验室基金(批准号：ITD-U2003/K1260009)资助的课题.* Project supported by the National Natural Science Foundation of China (Grant Nos.61271100,61271250), the Major Program of Natural Science Basic Research of Shaanxi Province, China (Grant No.2010JZ010), and the Foundation of Communication Network Information Transmission and Distribution Technology Laboratory, China (Grant No. ITD-U2003/K1260009) （批准号:61271100,61271250）
