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Comptibility of optical transparency and microwave absorption in C-band for the metamaterial with second-order cross fractal structure

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成果类型:
期刊论文
作者:
DongyongShan;LonghuiHe;LianwenDeng;HengLuo;CongweiLiao;YuhuiPeng;YunchaoXu;ShengxiangHuang
作者机构:
School of Physics and Electronics, Central South University, Changsha, 410083, China
School of Information and Electronic Engineering, Hunan City University, Yiyang, 413000, China
语种:
中文
关键词:
Metamaterial absorber;Fractal structure;Optical transparency;Electromagnetic loss mechanism;C-band microwave
期刊:
Physica E: Low-dimensional Systems and Nanostructures
ISSN:
1386-9477
年:
2020
卷:
116
期:
Volume 116
页码:
113756-
机构署名:
本校为其他机构
摘要:
An optically transparent metamaterial absorber (MMA) operated in the C-band (4–8 GHz) is optimally designed based on the second-order cross fractal structure. The experimental results show that the reflection loss of the proposed MMA is lower than −10 dB from 3.98 GHz to 8.68 GHz. Two overlapped resonances located at 4.77 GHz and 7.33 GHz, respectively, are caused by the second-order cross fractal structure. Distributions of surface current, electromagnetic field and power loss density are investigated to illustrate the absorptive characteristics and electromagnetic loss mechanisms of the proposed MMA. Moreover, the average optical transmittance of the MMA is close to 75% from 390 nm to 780 nm. The MMA possesses simultaneously strong absorptive capacity in the C-band and high transmittance in the visible light range, showing potential application in special environment.

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