Open AccessA polarization-independent transmission absorption metamaterial absorber based on electromagnetic resonance
Author(s) -
Lei Lu,
Qu Shao-Bo,
Hua Ma,
Fei Yu,
Song Xia,
Zhuo Xu,
Peng Bai
Publication year - 2013
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.104102
Subject(s) - metamaterial absorber , metamaterial , full width at half maximum , materials science , bandwidth (computing) , absorption (acoustics) , optics , electromagnetic radiation , polarization (electrochemistry) , resonance (particle physics) , tunable metamaterials , optoelectronics , physics , telecommunications , computer science , atomic physics , chemistry
In this paper, we simulate and experimentally validate a polarization-independent transmission absorption metamaterial absorber based on electromagnetic resonance. The metamaterial absorber can absorb the high-frequency electromagnetic wave, and the low-frequency wave can transmit through the absorber. The tested results indicate that the metamaterial absorber can achieve a narrow bandwidth high absorption with a peak absorption of 83.6% at 6.77 GHz, and a full width at half maximum (FWHM) of 4.3%. To further broaden the absorption bandwidth of the resonant metamaterial absorber, we place two absorbers with different working frequencies together for its low-frequency transmitted characteristic. The measured data show that the composite metamaterial absorber can increase the FWHM to 10.9%, and can enhance the absorption slightly. The metamaterial absorber has some advantages, such as simple design, strong practicability, and important application foreground.
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