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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Multiband metamaterial microwave absorbers using split ring and multiwidth slot structure
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Multiband metamaterial microwave absorbers using split ring and multiwidth slot structure

机译：使用裂环和多宽度缝隙结构的多频带超材料微波吸收器

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This article proposes a multiband metamaterial microwave absorber based on arnsplit ring-slot structure. Both simulation and experimental measurements are carriedrnout to obtain the scattering parameters which are used to retrieve the absorptionrncoefficient, relative permittivity, and relative permeability. The influences onrnthe absorption produced by geometrical dimensions, incidence angles and polarisationrnangles are investigated from 1.5 to 18.0 GHz. The results show that thernabsorber possesses three resonance peaks with absorption greater than 70% measuredrnexperimentally at 3.0, 5.8, and 11.0 GHz. The absorption performance isrninsensitive to the angle of incidence, θ up to 60u0001.The absorption mechanisms arernstudied based on the surface current distribution, electric field distribution, andrnconstitutive parameters (μr and εr). Furthermore, a mechanical mean using dielectricrnmaterial to tune the absorption frequencies (up to 1.0 GHz of tuning range) andrnenhance the absorption bandwidth (up to 50%) is demonstrated.
机译：本文提出了一种基于arnsplit环缝结构的多频带超材料微波吸收器。进行了模拟和实验测量，以获得散射参数，这些散射参数用于获取吸收系数，相对介电常数和相对磁导率。在1.5至18.0 GHz范围内研究了几何尺寸，入射角和极化角对吸收的影响。结果表明，吸热器具有三个共振峰，在3.0、5.8和11.0 GHz处实验测量吸收率大于70％。吸收性能对入射角θ直至60u0001不敏感。根据表面电流分布，电场分布和本构参数（μr和εr）研究吸收机理。此外，还演示了一种使用介电材料调节吸收频率（高达1.0 GHz的调谐范围）并增强吸收带宽（高达50％）的机械平均值。

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