Research on Shielding Effectiveness Test Technology of Boundary Deformation Mutual Coupling Reverberation Chamber

被引：0
|
作者：
Cheng E. [1 ,2 ]
Wang P. [2 ]
Zhang Y. [2 ]
Jia R. [3 ]
Meng C. [1 ]
机构：
[1] Department of Engineering Physics, Tsinghua University, Beijing
[2] National Key Laboratory on Electromagnetic Environment Effects, Army Engineering University, Shijiazhuang Campus, Shijiazhuang
[3] 63892 Unit of PLA, Luoyang
来源：
Gaodianya Jishu/High Voltage Engineering | 2023年 / 49卷 / 07期
基金：
中国国家自然科学基金;
关键词：
boundary deformation; composite material; definition of shielding effectiveness; dynamic range; loading effect; repeatability; reverberation chamber;
D O I：
10.13336/j.1003-6520.hve.20220513
中图分类号：
学科分类号：
摘要：
In order to solve the problems that the structure of the shielding effectiveness (SE) measurement system of the reverberation chamber (RC) is too complex and inaccurate, a method for measuring the SE of the mutual-coupling RC material based on the boundary deformation technique was put forward. By normalizing the internal power density of the transmitting RC, a modification method for the definition of SE of materials in the RC was proposed. This definition method can be employed to eliminate the influence of the test device and the test material loading on the electric field distribution, so the test accuracy is improved. The performance of the SE test system was studied experimentally, and the influence of the position and direction of the receiving antenna on the SE test results was discussed. The results show that the dynamic range of the developed SE testing system is 60~90 dB, and the standard deviation of the internal electric field is less than 3 dB, which can be used for SE testing. The average SE of the tested composites fluctuates between 28 dB and 34 dB in the frequency range of 1~10 GHz. The maximum standard deviation of the five groups of test data is 1.96 dB, and the coefficient of variation is less than 8.05%, which showed that the test results had good repeatabilty. © 2023 Science Press. All rights reserved.
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页码：3102 / 3109
页数：7
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