Mechanism analysis and verification of double-layer micro-nano structure to enhance electromagnetic shielding

被引：0

作者：

Liao D. ^{[1
]}

Zheng Y. ^{[1
]}

Cui H. ^{[1
,2
]}

Cun T. ^{[3
]}

Fu Y. ^{[1
]}

机构：

[1] College of Electronic Science, National University of Defense Technology, Changsha

[2] Shenyang Aircraft Design and Research Institute, Shenyang

[3] Zhongwei United Innovation (Pingtan) Engineering Research Co., Ltd., Fuzhou

来源：

Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2022年 / 30卷 / 11期

关键词：

Double layer; Electromagnetic shielding; Light transmission; Micro-nano structure;

D O I：

10.37188/OPE.20223000.0085

中图分类号：

学科分类号：

摘要：

An analysis model is established and a theoretical formula is deduced to analyze the electromagnetic shielding enhanced by a double-layer micro-nano structure. By using the square structure as an example, the effectiveness of the electromagnetic shielding enhanced by the double-layer micro-nano structure is investigated, and a calculation formula for the electromagnetic shielding of the double-layer structure is derived. In addition, a full-wave simulation is carried out using CST Microwave Studio, the results of which are in good agreement with those of the theoretical calculations. In the full-wave simulation, the micro-nano structure is two-three orders of magnitude smaller than the calculated corresponding wavelength, which verifies the correctness of the mechanism analysis and the calculation of the full-wave simulation software. The analysis of the electromagnetic shielding enhancement mechanism and the provided calculation formula can be extended to the multilayer micro-nano structure, which is universal. To further verify the accuracy of the mechanism analysis and the full-wave software simulation results, a square double-layer micro-nano structure sample is prepared. The measured results of the sample are essentially consistent with the theoretical and full-wave simulation results. The shielding effectiveness is greater than 45 dB in the range of 2-18 GHz, and the average light transmittance exceeds 71%, which has good transparent shielding performance. This mechanism analysis provides theoretical guidance for designing micro-nano structures with increased light transmission and high-efficiency electromagnetic shielding performance. © 2022, Science Press. All right reserved.

引用

页码：1310 / 1316

页数：6

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