工程设计学报2011，Vol.18Issue(3)：197-203,7.DOI:10.3785/j.issn.1006-754X.2011.03.008
带缝隙腔体电磁屏蔽特性的数值模拟研究
Numerical simulation on the electromagnetic shielding performance of enclosure with slots
摘要
Abstract
Large number of apertures and slots are usually inevitably presented in actual enclosure of electronic equipment due to heat dissipation purpose. However, the penetration of electromag netic energy leaking though apertures, especially slots, will compromise the shielding perform ance remarkably. Then, a metallic rectangular enclosure with slots was studied, and the influ ence of polarization mode and angles of incidence plane wave, parameters of slots such as length,quantity, location, space and orientation on the shielding performance of the enclosure were in vestigated by the transmission-line matrix method(TLM). Finally, the main factors determining the shielding performance of the enclosure were proposed. The polarization mode of plane wave,length and orientation of slots has significant influence on the shielding effectiveness and reso nance points of the enclosure. The electric field orientation of incidence wave should avoid being vertical with longer sides of slots, and slots shouldn't be lengthy in structure shielding design.关键词
缝隙/传输线矩阵法/平面波/电磁屏蔽特性/屏蔽效能/谐振点Key words
slot/ TLM/ plane wave/ electromagnetic shielding performance/ shielding effectiveness/ resonance point分类
信息技术与安全科学引用本文复制引用
吴贤,杜平安,聂宝林,毛湘宇..带缝隙腔体电磁屏蔽特性的数值模拟研究[J].工程设计学报,2011,18(3):197-203,7.基金项目
"十一五"总装预先研究基金资助项目(YG060101C). （YG060101C）
