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箱式屏蔽效能测试方法及影响因素分析
引用本文:张龙,魏光辉,胡小锋,李新峰,张勇强.箱式屏蔽效能测试方法及影响因素分析[J].军械工程学院学报,2012(3):27-30.
作者姓名:张龙  魏光辉  胡小锋  李新峰  张勇强
作者单位:[1]军械工程学院静电与电磁防护研究所,河北石家庄050003 [2]空军第四飞行学院模拟训练中心,河北石家庄050081
基金项目:国家自然科学基金青年基金资助项目(61001050)
摘    要:为测试强电磁场作用下材料的屏蔽效能,基于屏蔽材料的屏蔽原理,提出一种在GTEM室内置屏蔽箱测试材料屏蔽效能的新方法,构建实验平台,仿真分析屏蔽箱窗口尺寸及测试探头位置对测试结果的影响.实验结果表明:测试窗口大小和测试位置对测试材料的屏蔽效能有影响.其主要影响因素是屏蔽效能的测试频率下限,并确定了0.6m×0.6m窗口的测试频率下限为55MHz,0.3m×0.3m测试窗口的测试频率下限为250MHz.

关 键 词:屏蔽效能  GTEM室  正弦波  电场强度  仿真

Shielding Effectiveness Testing Method Using Shielding Box and the Impact Factors
ZHANG Long,WEI Guang-hui,HU Xiao-feng,LI Xin-feng,ZHANG Yong-qiang.Shielding Effectiveness Testing Method Using Shielding Box and the Impact Factors[J].Journal of Ordnance Engineering College,2012(3):27-30.
Authors:ZHANG Long  WEI Guang-hui  HU Xiao-feng  LI Xin-feng  ZHANG Yong-qiang
Institution:1. Institute of Electrostatic and Electromagnetic Protection, Ordnance Engineering College, Shijiazhuang 050003, China; 2. Simulator Training Center, No. 4 Flying College of the Air Force, Shijiazhuang 050081, China)
Abstract:Based on the theory of shielding effectiveness(SE), a new shielding effectiveness test method using the electromagnetic shielding box placed in the GTEM cell is brought forward in or- der to test the SE under the high electromagnetic field. The experiment system is set up. The key factors such as the size of window on the shielding box and test position that affect the SE are an- alyzed. The simulation results show that the size of test window and the test position affect the test results. The main impact factor is the low limit test frequency. It is proved that the low limit frequency of 0.6 m×0.6 m window is 55 MHz and the low limit frequency of 0.3 m×0.3 m window is 250 MHz.
Keywords:SE  GTEM cell  sine wave  electromagnetic  field ~ stimulation
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