强激光与粒子束2013，Vol.25Issue(9)：2355-2362,8.DOI:10.3788/HPLPB20132509.2355
带缝隙矩形腔的屏蔽效能传输线法修正及扩展分析
Shielding effectiveness analysis of rectangular cavity with aperture by modification and expansion of transmission line method
摘要
Abstract
In order to study the influences of the incident electromagnetic wave and seam parameter on the rectangular cavity of shielding effectiveness (SE),SE analysis of cavity based on the transmission law combined with equivalent transmission line method was performed.The transmission into cavity of electric field was derived in detail,we took the transmission electric field as equivalent voltage source and revised the traditional transmission line model,and the calculation formula of this method was extended,it could analyze different shapes,hole array,hole spacing and loss,etc.Research shows that hole located in the center of the body wall of SE was worse than that near the body wall edge area.Compared with incident angle and azimuth angle,polarization angle has greater impact on the cavity SE.When keeping hole array area unchanged,decreasing aperture diameter,which increases the number of holes and hole spacing,can improve the cavity SE.Greater loss factor of cavity can induce better resonant frequency suppression effect.By analysis of cavity resonance frequency with theoretical and numerical methods,the result obtained by modification and expansion of the analysis method is credible.关键词
屏蔽效能/透射定律/偏离中心/损耗因子/谐振频率Key words
shielding efficiency/ transmission law/ off center/ loss factor/ resonance frequency分类
数理科学引用本文复制引用
彭强,周东方,侯德亭,余道杰,胡涛,王利萍,夏蔚..带缝隙矩形腔的屏蔽效能传输线法修正及扩展分析[J].强激光与粒子束,2013,25(9):2355-2362,8.基金项目
国家高技术发展计划项目 （）
国家自然科学基金项目(61201056) （61201056）
