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Investigation on microwave absorption characteristics of conductive-coated honeycomb absorber

机译：导电涂层蜂窝吸收剂微波吸收特性研究

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摘要

Because microwave absorbers are limited in their absorption performance and bandwidth by their thickness, research on lightweight microwave absorbers having a wide bandwidth has been increasingly conducted. Lightweight structures with periodicity, such as honeycomb structures, have been increasingly attracting attention as they have the potential for application as lightweight broadband absorbers. Aramid or glass fiber-based honeycomb cores are dielectric materials that are often used in industrial applications. If a honeycomb absorber is manufactured by coating a conducive material on a honeycomb core, microwave absorption performance can be expected in a wide frequency range. However, structures with a certain periodicity, such as honeycombs, may bring about unexpected effects due to the shape with respect to the propagation direction of the microwave. In this study, the characteristics of absorbing electromagnetic energy in honeycomb absorbers were investigated, and the possibility of analyzing honeycomb absorbers by the transmission line analysis method was examined. Based on this investigation, a honeycomb absorber was fabricated, and the simulation results were verified by evaluating the performance by the free-space measurement method. Because of unpredictable scattering of the microwave polarized in the in-plane direction, for honeycomb absorbers, it is necessary to keep the coating resistance low or carefully consider the influences through simulation.
机译：由于微波吸收器的吸收性能和带宽受到厚度的限制，因此对具有宽带宽的轻质微波吸收器的研究已经越来越多地进行。具有周期性的轻质结构，例如蜂窝结构，越来越多地引起关注，因为它们具有作为轻质宽带吸收剂的应用。芳族聚酰胺或玻璃纤维的蜂窝芯是通常用于工业应用中的介电材料。如果通过在蜂窝芯上涂覆有电气的蜂窝状吸收器，可以在宽频范围内预期微波吸收性能。然而，具有一定周期性的结构，例如蜂窝状，可能由于相对于微波的传播方向而导致的意外效果。在该研究中，研究了吸收蜂窝体吸收剂中的电磁能的特性，并检查了通过传输线分析方法分析蜂窝吸收剂的可能性。基于该研究，制备了一种蜂窝吸收剂，通过自由空间测量方法评估性能来验证模拟结果。由于在面内方向上偏振的微波散射，对于蜂窝聚物吸收剂，必须使涂层电阻保持低或仔细考虑通过模拟的影响。

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  • 来源
    《Composite Structures》 |2020年第6期|112129.1-112129.9|共9页
  • 作者

    Choi Jae-Hun; Jang Min-Su; Jang Woo-Hyeok; Kim Chun-Gon;

  • 作者单位

    Korea Adv Inst Sci & Technol Dept Aerosp Engn Sch Mech & Aerosp Engn SSCL 291 Daehak Ro Daejeon 34141 South Korea;

    Korea Adv Inst Sci & Technol Dept Aerosp Engn Sch Mech & Aerosp Engn SSCL 291 Daehak Ro Daejeon 34141 South Korea;

    Korea Adv Inst Sci & Technol Dept Aerosp Engn Sch Mech & Aerosp Engn SSCL 291 Daehak Ro Daejeon 34141 South Korea;

    Korea Adv Inst Sci & Technol Dept Aerosp Engn Sch Mech & Aerosp Engn SSCL 291 Daehak Ro Daejeon 34141 South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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