Miniaturized metamaterial absorber with high transparency using narrow metallic strip

In this article, a miniaturized transparent metamaterial absorber (MA) that can achieve boardband microwave absorption is presented. An extremely narrow eight-notch ring metallic strip and a new hexagonal metallic strip are employed to design the MA. The MA exhibits over 10 dB absorption from 8 to 2...

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Bibliographic Details
Published in:Journal of applied physics 2021-11, Vol.130 (18)
Main Authors: Chen, Jianzhong, Zhao, Yu-Tong, Feng, Wenyuan, Zhang, Yu
Format: Article
Language:English
Subjects:
Absorbers
Absorbers (materials)
Antenna design
Applied physics
Electromagnetic compatibility
Frequencies
Metamaterials
Microwave absorption
Strip
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Summary:In this article, a miniaturized transparent metamaterial absorber (MA) that can achieve boardband microwave absorption is presented. An extremely narrow eight-notch ring metallic strip and a new hexagonal metallic strip are employed to design the MA. The MA exhibits over 10 dB absorption from 8 to 20 GHz. The size of the unit is only 2.5 × 2.5 mm 2, about 0.116 λ × 0.116 λ at the center frequency. The MA is insensitive to the polarization angle. The absorption rate of TE and TM waves with 0 °– 30 ° oblique incidence is more than 90% in the operating frequency band. The optical transmittance of the absorber is greater than 70% in the whole visible frequency band. Both numerical simulations and experimental results demonstrate the good performance of the proposed MA, thereby enabling a wide range of applications such as antenna design, filter structure, electromagnetic fielding, and electromagnetic compatibility.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0068134