含复合材料封闭腔电磁屏蔽效能评估
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国家自然科学基金资助项目(61877041)

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Evaluation of electromagnetic shielding effectiveness for enclosure partially made of composite materials
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    摘要:

    复合材料已广泛应用于现代航空航天、汽车和电子等行业。当复合材料用于腔体外层时,其仅几毫米的厚度为基于时域有限差分(FDTD)法的电磁屏蔽效能评估带来挑战。本文采用亚网格边界条件(SGBC)技术,结合FDTD方法实现了对含复合材料薄层封闭腔的电磁屏蔽效能快速评估。计算了3种不同含复合材料薄层封闭腔在0.1?1 GHz内的电磁屏蔽效能,并与基于全波分析方法软件的仿真结果进行对比,二者计算结果吻合良好,证明了采用该方法在复合材料封闭腔SE分析方面的有效性。

    Abstract:

    Composite materials have been widely employed in modern aerospace, automotive and electronics industries. However, when the composite material is used as external layer of the enclosure, its thickness of a few millimeters, becomes a big challenge for the evaluation of electromagnetic Shielding Effectiveness(SE) based on the Finite-Difference Time-Domain(FDTD) method. Subgridding Boundary Condition(SGBC) method combined with the FDTD method is applied to tackle this issue. The SE of different enclosures has been analyzed in the frequency range of 0.1-1 GHz. The results obtained by using SGBC-FDTD method are compared to those calculated using software based on full wave analysis, and good agreements are observed.

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冯博文,闫丽萍,赵 翔,刘 强,孟雪松,周海京.含复合材料封闭腔电磁屏蔽效能评估[J].太赫兹科学与电子信息学报,2020,18(4):650~655

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  • 收稿日期:2019-12-19
  • 最后修改日期:2020-01-17
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  • 在线发布日期: 2020-09-02
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