Design of a broadband, wide-angle metamaterial absorber base on hybrid structure

Wei LiSchool of Communication and Information Engineering, Key Laboratory of Special Fiber Optics and Optical Access Networks, Shanghai University, Shanghai, China

Zhongyin XiaoSchool of Communication and Information Engineering, Key Laboratory of Special Fiber Optics and Optical Access Networks, Shanghai University, Shanghai, ChinaCorrespondence[email protected]

Xinyan LingSchool of Communication and Information Engineering, Key Laboratory of Special Fiber Optics and Optical Access Networks, Shanghai University, Shanghai, China

Xiaoxia ZhengSchool of Communication and Information Engineering, Key Laboratory of Special Fiber Optics and Optical Access Networks, Shanghai University, Shanghai, China

Chuan LiSchool of Communication and Information Engineering, Key Laboratory of Special Fiber Optics and Optical Access Networks, Shanghai University, Shanghai, China

Huanling ZouSchool of Communication and Information Engineering, Key Laboratory of Special Fiber Optics and Optical Access Networks, Shanghai University, Shanghai, China

Abstract

In this paper, we presented and investigated a special metamaterial absorber to achieve broadband absorption. Firstly, we proposed a two-dimensional (2D) structure, which include a hybrid layer on the top, a dielectric layer in the middle, and a metal ground on the bottom. By the hybrid design on the top layer of the absorber, we achieved broadband absorption. The relative bandwidth is 22.57%. Furthermore, in order to improve the absorption bandwidth, we changed the absorber as a three-dimensional (3D) structure. The simulated results show that the absorber can be obtained a broadband absorption, the relative bandwidth up to 82.93%. Compared to the two-dimensional structure, it is clear that the three-dimensional structure has a better absorption. According to the effective medium theory, the relative impedance is calculated to explain the absorption mechanism. Finally, we believe it will have many potential applications in sensing, energy harvest and so on.

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Design of a broadband, wide-angle metamaterial absorber base on hybrid structure

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Design of a broadband, wide-angle metamaterial absorber base on hybrid structure

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