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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Resistively loaded ultra-thin FSS absorbers for radio-frequency enhancement of spacecraft thermal blankets
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Resistively loaded ultra-thin FSS absorbers for radio-frequency enhancement of spacecraft thermal blankets

机译：用于航天器热毯的射频增强的电阻加载的超薄FSS吸收器

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摘要

This study reports the use of metal-backed frequency selective surface (FSS) absorbers as a means to control the scattering of electromagnetic energy from satellite platforms which are covered with thermal blankets. This is achieved by exploiting the similarity of the physical construction of this class of absorber and the dielectric clad foil-backed outermost layer of space blankets. Simulated results are presented for five absorber designs which are suitable for mechanical integration into the top surface of a multi-layer insulator. These were constructed using polyethylene terephthalate (PET) material with sheet thickness in the range 140 mu m (./213) -1120 mu m (./25). The optimum performance around 10 GHz was obtained from an array of hexagonal patch elements with the conductivity of the silver plating adjusted to achieve the desired resistive loading. At normal incidence, the FSS-based structures presented -10 dB reflectivity bandwidths that are strongly dependent on the thickness of the PET sheet and vary between 2 and 16%. The design methodology is verified by measuring the radar backscatter from 140 and 1120 mu m thick absorbers in the frequency range 8-12 GHz.
机译：该研究报告了使用金属背频选择性表面（FSS）吸收剂作为控制来自卫星平台的电磁能散射的装置。这是通过利用这类吸收器的物理结构的相似性和电介质包覆箔背衬的空间毯层的相似性来实现的。仿真结果呈现用于五个吸收器设计，其适用于机械整合到多层绝缘体的顶表面中。这些是使用聚对苯二甲酸乙二醇酯（PET）材料构建，其中片材厚度为140μm（。/ 213）-1120μm（./25）。 10 GHz约为10GHz的最佳性能，从六角形贴片元件阵列中获得，具有调节的银电镀的导电性以实现所需的电阻载荷。在正常发射时，基于FSS的结构呈现-10 DB反射带宽，其强烈取决于PET板的厚度并在2至16％之间变化。通过测量频率范围8-12GHz的频率范围为140和1120μm厚的吸收器来验证设计方法。

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  • 来源
    《Microwaves, Antennas & Propagation, IET》 |2019年第11期|1928-1933|共6页
  • 作者

    Machado Gabriel Goncalves; Cahill Robert; Fusco Vincent; Conway Gareth;

  • 作者单位

    Queens Univ Belfast Inst Elect Commun & Informat Technol Sch Elect Elect Engn & Comp Sci Northern Ireland Sci Pk Queens Rd Belfast BT3 9DT Antrim North Ireland;

    Queens Univ Belfast Inst Elect Commun & Informat Technol Sch Elect Elect Engn & Comp Sci Northern Ireland Sci Pk Queens Rd Belfast BT3 9DT Antrim North Ireland;

    Queens Univ Belfast Inst Elect Commun & Informat Technol Sch Elect Elect Engn & Comp Sci Northern Ireland Sci Pk Queens Rd Belfast BT3 9DT Antrim North Ireland;

    Queens Univ Belfast Inst Elect Commun & Informat Technol Sch Elect Elect Engn & Comp Sci Northern Ireland Sci Pk Queens Rd Belfast BT3 9DT Antrim North Ireland;

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