| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Multi-band microwave metamaterial absorber based on coplanar Jerusalem crosses |
| Wang Guo-Dong (王国栋)a, Liu Ming-Hai (刘明海)a, Hu Xi-Wei (胡希伟)a b, Kong Ling-Hua (孔令华)a, Cheng Li-Li (程莉莉)b, Chen Zhao-Quan (陈兆权)c |
a State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;
b School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China;
c College of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan 232001, China |
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Abstract The influence of the gap on the absorption performance of the conventional split ring resonator (SRR) absorber is investigated at microwave frequencies. Our simulated results reveal that the geometry of the square SRR can be equivalent to a Jerusalem cross (JC) resonator and its corresponding metamaterial absorber (MA) is changed to a JC absorber. The JC MA exhibits an experimental absorption peak of 99.1% at 8.72 GHz, which shows an excellent agreement with our simulated results. By simply assembling several JCs with slightly different geometric parameters next to each other into a unit cell, a perfect multi-band absorption can be effectively obtained. The experimental results show that the MA has four distinct and strong absorption peaks at 8.32 GHz, 9.8 GHz, 11.52 GHz and 13.24 GHz. Finally, the multi-reflection interference theory is introduced to interpret the absorption mechanism.
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Received: 03 April 2013
Revised: 28 May 2013
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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42.25.Bs
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(Wave propagation, transmission and absorption)
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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 Nos. 10775055 and 11105002) and the Open-end Fund of State Key Laboratory of Structural Analysis for Industrial Equipment, China (Grant No. GZ1215). |
Corresponding Authors:
Liu Ming-Hai
E-mail: mhliu@mail.hust.edu.cn
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Cite this article:
Wang Guo-Dong (王国栋), Liu Ming-Hai (刘明海), Hu Xi-Wei (胡希伟), Kong Ling-Hua (孔令华), Cheng Li-Li (程莉莉), Chen Zhao-Quan (陈兆权) Multi-band microwave metamaterial absorber based on coplanar Jerusalem crosses 2014 Chin. Phys. B 23 017802
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