Prediction of electric field in the loaded cavity based on the theory of reverberation chambers

被引：0

作者：

Chen Y. ^{[1
]}

Zhou X. ^{[2
]}

Ji J. ^{[2
]}

Zhai S. ^{[1
]}

Chen D. ^{[1
]}

机构：

[1] State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, Shenzhen

[2] School of Mechanical Engineer, Southeast University, Nanjing

来源：

Progress In Electromagnetics Research M | 2021年 / 100卷

基金：

中国国家自然科学基金;

关键词：

15;

D O I：

10.2528/PIERM20090902

中图分类号：

学科分类号：

摘要：

The shielding cavity loaded with electronic equipment inside has a high Q value and is in overmode at relatively high frequency as a reverberation chamber (RC), but it does not have stirrers or paddles. However, the electromagnetic environment in the cavity is similar to that in the reverberation chamber working in frequency stirring mode or source stirring mode because of the certain bandwidth of the electronic equipment and the movement of the portable electronic equipment. Therefore, the electric field in the cavity can be predicted based on the theory of reverberation chamber. In order to predict the electric field in a given shielding cavity after loading additional electronic equipment, the determination method of the Q value of the cavity and the absorption cross section (ACS) of the electronic equipment, the influence of the ACS on the Q value of the cavity, and the relationship between the Q value and electric field are analyzed. Firstly, the ACS and radiated emission power of the loading electronic equipment are measured in the RC. Then, the Q value of the cavity with the electronic equipment loaded inside is calculated by the known Q value of the cavity without the electronic equipment and the ACS of the electronic equipment. Finally, the electric field in the cavity loaded with electronic equipment is estimated by using the calculated Q value of the loaded cavity and the measured radiated emission power of the electronic equipment. The experimental results verify the effectiveness of the prediction method. © 2021, Electromagnetics Academy. All rights reserved.

引用

页码：117 / 125

页数：8

共 15 条

[1]

Siah E. S., Sertel K., Volakis J. L., Liepa V. V., Wiese R., Coupling studies and shielding techniques for electromagnetic penetration through apertures on complex cavities and vehicular platforms, IEEE Transactions on Electromagnetic Compatibility, 45, 2, pp. 245-256, (2003)

[2]

Hill D. A., Electromagnetic Fields in Cavities: Deterministic and Statistical Theories, (2009)

[3]

Tait G. B., Hager Iv C. E., Baseler T. T., Slocum M. B., Ambient power density and electric field from broadband wireless emissions in a reverberant space, IEEE Transactions on Electromagnetic Compatibility, 58, 1, pp. 307-313, (2016)

[4]

Gros J. B., Legrand O., Mortessagne F., Richalot E., Selemani K., Universal behaviour of a wave chaos based electromagnetic reverberation chamber, Wave Motion, 51, 4, pp. 664-672, (2014)

[5]

Romero S. F., Gutierrez G., Gonzalez I., Universal behaviour of a wave chaos based electromagnetic reverberation chamber, Prediction of the Maximum Electric Field Level Inside a Metallic Cavity Using a Quality Factor Estimation, 28, 12, pp. 1468-1477, (2014)

[6]

Gradoni G., Micheli D., Moglie F., Mariani Primiani V., Absorbing cross section in reverberation chamber: Experimental and numerical results, Progress In Electromagnetics Research B, 45, pp. 187-202, (2012)

[7]

Gifuni A., Khenouchi H., Schirinzi G., Performance of the reflectivity measurement in a reverberation chamber, Progress In Electromagnetics Research, 154, pp. 87-100, (2015)

[8]

Yu S. P., Bunting C. F., Statistical investigation of frequency-stirred reverberation chambers, 2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446), 1, pp. 155-159, (2003)

[9]

Zhou Z., Hu P., Zhou X., Ji J., Zhou Q., Performance evaluation of oscillating wall stirrer in reverberation chamber using correlation matrix method and modes within Q-bandwidth, IEEE Transactions on Electromagnetic Compatibility, 62, 6, pp. 2669-2678, (2020)

[10]

West J. C., Dixon J. N., Nourshamsi N., Das D. K., Bunting C. F., Best practices in measuring the quality factor of a reverberation chamber, IEEE Transactions on Electromagnetic Compatibility, 60, 3, pp. 564-571, (2018)

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