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．
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.
出处
《军械工程学院学报》
2012年第3期27-30,共4页
Journal of Ordnance Engineering College
基金
国家自然科学基金青年基金资助项目（61001050）
