用于超宽带电磁屏蔽的可切换透明频率选择表面

2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI:10.1109/APEMC53576.2022.9888335

Chengrong Wang, Liping Yan, Zihan Sun, Yang Yang, Xiang Zhao

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引用次数: 1

摘要

提出了一种用于宽带电磁屏蔽的光透明频率选择表面。该FSS由夹在两个聚二甲基硅氧烷(PDMS)层之间的聚甲基丙烯酸甲酯(PMMA)层组成。Ω-shape图案被刻在PDMS上，形成微流体通道，液态金属在其中流过。通过在微通道中注入共晶镓铟(EGaIn)等液态金属，该设计的电磁响应可以从全通切换到带阻特性。仿真结果表明，无论在TE模式还是TM模式下，均可实现SE≥10 dB的18.8 GHz带宽，角稳定性均达80°。同时，盾构的透明度可达81%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Switchable Optically Transparent Frequency Selective Surface for ultrawide-band Electromagnetic Shielding

An optically transparent frequency selective surface (FSS) for broadband electromagnetic shielding is proposed in this paper. The proposed FSS consists of a polymethyl methacrylate (PMMA) layer sandwiched between two Polydimethylsiloxane (PDMS) layers. The Ω-shape pattern is engraved on PDMS to form the microfluidic channels, where a liquid metal flows through. The electromagnetic response of the proposed design can be switched from all-pass to bandstop characteristic by injecting a liquid metal such as eutectic gallium indium (EGaIn) into the microchannels. Simulated results demonstrate that the 18.8 GHz bandwidth of SE ≥ 10 dB is achieved, with angular stability up to 80° for both TE and TM modes. Meanwhile, the transparency of the proposed shield can reach up to 81%.

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2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)

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