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PIER PIER B PIER C PIER M PIER Letters
2023-05-22
Low-Frequency Magnetic Shielding of Double-Layer Conducting Plates with Periodic Apertures: Experimental Observation of Great Improvement of Shielding Effectiveness by Slightly Separating the Two Plates
By
Feiyan Zhou,

    Dr. Feiyan Zhou

    China Electric Power Research Institute

    China

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Yan Wu,

    Dr. Yan Wu

    China Electric Power Research Institute

    China

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Lingyun Gu,

    Dr. Lingyun Gu

    China Electric Power Research Institute

    China

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Xuefeng Bai,

    Dr. Xuefeng Bai

    China Electric Power Research Institute

    China

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Yan Wu,

    Dr. Yan Wu

    China Electric Power Research Institute

    China

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Yang Wang,

    Dr. Yang Wang

    North China Electric Power University

    China

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Dingyu Qin,

    Dr. Dingyu Qin

    School of Electrical and Electronic Engineering

    North China Electric Power University

    China

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Chongqing Jiao

    Dr. Chongqing Jiao

    North China Electric Power University

    China

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Progress In Electromagnetics Research M, Vol. 117, 47-57, 2023
doi:10.2528/PIERM23022604
Abstract
This article focuses on the low-frequency magnetic shielding of double-layer conducting plates with periodic circular apertures. The shielding effectiveness (SE) is measured as the insertion loss of the plates when they are placed between a pair of coaxial loops, one for magnetic field emission and the other for receiving. Our experimental results show that the SE sharply increases with the layer-to-layer spacing increasing from zero to the aperture diameter. For aluminum plates with 1 mm thickness, 20 mm unit cell and 10 mm aperture diameter, the enhancement is approximately 10 dB and 20 dB for 3 mm and 9 mm spacing, respectively. In addition, the effect of the lateral deviation on the SE is evident only if the spacing is smaller than the aperture diameter.
Citation
Feiyan Zhou Yan Wu Lingyun Gu Xuefeng Bai Yan Wu Yang Wang Dingyu Qin Chongqing Jiao , "Low-Frequency Magnetic Shielding of Double-Layer Conducting Plates with Periodic Apertures: Experimental Observation of Great Improvement of Shielding Effectiveness by Slightly Separating the Two Plates," Progress In Electromagnetics Research M, Vol. 117, 47-57, 2023.
doi:10.2528/PIERM23022604
http://www.jpier.org/PIERM/pier.php?paper=23022604
References

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