Transparent ultrawideband absorber based on simple patterned resistive metasurface with three resonant modes

Optics Express
Pingping MinJiaqi Zhu

Abstract

A transparent low-profile polarization-insensitive metamaterial absorber with ultrawideband microwave absorption is presented. A fractional bandwidth of 125.2% (4.3-18.7 GHz, absorptance > 90%) is achieved using a simple patterned resistive metasurface. The thickness of the absorber is only ∼0.086 times the upper-cutoff wavelength. The experimental results agree with full-wave simulation results. A Cu-metal-mesh ground plane enhances the shielding efficiency and visible transparency. Radar cross-sections (RCS) are reduced across all reflection angles, over frequencies spanning the C, X, and Ku bands. With its visible-wavelength transparency, low profile, polarization insensitivity, excellent absorption, and wideband RCS reduction, the proposed absorber has wide applicability.

References

May 21, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·D R SmithC M Soukoulis
Jun 4, 2008·Physical Review Letters·N I LandyW J Padilla
Jun 7, 2011·Optics Express·Xiaopeng ShenHui Li
Aug 19, 2018·Optics Express·Shuomin ZhongYungui Ma

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Citations

Apr 7, 2021·Optics Express·Kaihuai WenLongjiang Deng

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