| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Wide-Angle Ultra-Broadband Metamaterial Absorber with Polarization-Insensitive Characteristics |
| Peng Chen2,3, Xianglin Kong2,3, Jianfei Han1, Weihua Wang1, Kui Han1, Hongyu Ma2,3, Lei Zhao3*, and Xiaopeng Shen1* |
1School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
2National and Local Joint Engineering Laboratory of Internet Application Technology on Mine, China University of Mining and Technology, Xuzhou 221116, China
3School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China
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| Cite this article: |
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Peng Chen, Xianglin Kong, Jianfei Han et al 2021 Chin. Phys. Lett. 38 027801 |
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Abstract An ultra-wideband metamaterial absorber is developed, which is polarized-insensitive and angular-stable. Three layers of square resistive films comprise the proposed metamaterial. The optimal values of geometric parameters are obtained, such that the designed absorber can achieve an ultra-broadband absorption response from 4.73 to 39.04 GHz (relative bandwidth of 156.7%) for both transverse electricity and transverse magnetic waves. Moreover, impedance matching theory and an equivalent circuit model are utilized for the absorption mechanism analysis. The compatibility of equivalent circuit calculation results, together with both full-wave simulation and experimental results, demonstrates the excellent performance and applicability of the proposed metamaterial absorber.
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Received: 21 September 2020
Published: 27 January 2021
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| PACS: |
78.67.Pt
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(Multilayers; superlattices; photonic structures; metamaterials)
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42.25.Bs
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(Wave propagation, transmission and absorption)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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| Fund: Supported by the Six Talent Peaks Project in Jiangsu Province (Grant No. XYDXX-072), the National Natural Science Foundation of China (Grant Nos. 61372048 and 61771226), and the Natural Science Foundation of Jiangsu Province (Grant No. BK20161186). |
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