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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Compact ultrathin conformal metamaterial dual-band absorber for curved surfaces
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Compact ultrathin conformal metamaterial dual-band absorber for curved surfaces

机译：紧凑的超薄形保形超材料双频带吸收器，用于弯曲表面

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摘要

A compact, ultrathin conformal metamaterial dual-band absorber for curved surfaces has been presented in this article. The absorber unit cell composed of circular and split ring resonators which are connected with plus-shaped structure. The proposed absorber unit cell is compact in size (0.22 lambda(o) x 0.22 lambda(o)) and as well as ultrathin thickness (0.006 lambda(o)), where lambda(o) is the wavelength at 5.8 GHz. The designed absorber gives two absorption tips at 5.8 and 7.7 GHz with more than 90% absorptivity. The full width at half maximum bandwidths are 220 MHz (5.67-5.89 GHz) and 250 MHz (7.58-7.83 GHz). The proposed conformal absorber is sensitive to the polarization angle and has a stable absorptivity over a wide range of incident electromagnetic wave. The parametric analysis and equivalent transmission line model have been investigated. The surface current and electric field distribution also discussed for understanding the absorption mechanism. To analyze the performance of proposed absorber on the curved surfaces, it is wrapped on the different radius of cylindrical surface and measured the absorptivity. Simulated and measured results have good agreement between them.
机译：本文介绍了一种用于曲面的紧凑型超薄共形超材料双带吸收器。吸收器单元电池由圆形和开口环形谐振器组成，它们以加号形结构连接。提出的吸收器单元电池尺寸紧凑（0.22λ（o）x 0.22λ（o）），并且厚度极薄（0.006λ（o）），其中λ（o）是5.8 GHz的波长。设计的吸收器在5.8 GHz和7.7 GHz处提供两个吸收尖端，吸收率超过90％。一半最大带宽的全宽为220 MHz（5.67-5.89 GHz）和250 MHz（7.58-7.83 GHz）。所提出的共形吸收体对极化角敏感，并且在宽范围的入射电磁波范围内具有稳定的吸收率。研究了参数分析和等效传输线模型。还讨论了表面电流和电场分布，以了解吸收机理。为了分析拟议的吸收器在弯曲表面上的性能，将其包裹在不同半径的圆柱表面上并测量吸收率。模拟和测量结果之间有很好的一致性。

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