CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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An ultrathin wide-band planar metamaterial absorber based on fractal frequency selective surface and resistive film |
Fan Yue-Nong (范跃农)a b, Cheng Yong-Zhi (程用志)a, Nie Yan (聂彦)a, Wang Xian (王鲜)a, Gong Rong-Zhou (龚荣洲)a |
a School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China; b Department of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China |
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Abstract We propose an ultrathin wide-band metamaterial absorber (MA) based on Minkowski (MIK) fractal frequency selective surface (FSS) and resistive films. This absorber consists of a periodic arrangement of dielectric substrate sandwiched with MIK fractal loop structure electric resonator and resistive film. The finite element method (FEM) is used to simulate and analyze the absorption of MA. Compared with the MA backed copper film, the designed MA backed resistive film exhibits an absorption of 90% in a frequency region of 2 GHz-20 GHz. The power loss density distribution of MA is further illustrated to explain the mechanism of proposed MA. Simulated absorptions in different cases of incidence indicate that this absorber is polarization-insensitive and of wide-angle. Finally, the further simulated results indicate that surface resistance of resistive film and dielectric constant of substrate can affect the absorbing property of the MA. This absorber may be used in many military fields.
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Received: 29 August 2012
Revised: 30 October 2012
Accepted manuscript online:
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PACS:
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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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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 51207060) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20090142110004). |
Corresponding Authors:
Cheng Yong-Zhi
E-mail: cyz0715@126.com
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Cite this article:
Fan Yue-Nong (范跃农), Cheng Yong-Zhi (程用志), Nie Yan (聂彦), Wang Xian (王鲜), Gong Rong-Zhou (龚荣洲) An ultrathin wide-band planar metamaterial absorber based on fractal frequency selective surface and resistive film 2013 Chin. Phys. B 22 067801
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