An ultrathin dual-band metamaterial absorber

Yong Zhang; Junping Duan; Wendong Zhang; Wanjun Wang; Binzhen Zhang

doi:10.1117/12.2245292

25 October 2016 An ultrathin dual-band metamaterial absorber

Yong Zhang, Junping Duan, Wendong Zhang, Wanjun Wang, Binzhen Zhang

Proceedings Volume 9685, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems; and Smart Structures and Materials; 96850D (2016) https://doi.org/10.1117/12.2245292
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China

Abstract

The design and preparation of an ultrathin dual-band metamaterial absorber whose resonant frequency located at radar wave (20 GHz-60 GHz) is presented in this paper. The absorber is composed of a 2-D periodic sandwich featured with two concentric annuluses. The influence on the absorber’s performance produced by resonant cell’s structure size and material parameters was numerically simulated and analyzed based on the standard full wave finite integration technology in CST. Laser ablation process was adopted to prepare the designed absorber on epoxy resin board coated with on double plane of copper with a thickness that is 1/30 and 1/50 of the resonant wavelength at a resonant frequency of 30.51 GHz and 48.15 GHz. The full width at half maximum (FWHM) reached 2.2 GHz and 2.35 GHz and the peak of the absorptance reached 99.977%. The ultrathin absorber is nearly omnidirectional for all polarizations. The test results of prepared sample testify the designed absorber’s excellent absorbing performance forcefully. The absorber expands inspirations of radar stealth in military domain due to its flexible design, cost-effective and other outstanding properties.

Citation Download Citation

Yong Zhang, Junping Duan, Wendong Zhang, Wanjun Wang, and Binzhen Zhang "An ultrathin dual-band metamaterial absorber", Proc. SPIE 9685, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems; and Smart Structures and Materials, 96850D (25 October 2016); https://doi.org/10.1117/12.2245292

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KEYWORDS

Copper

Metamaterials

Dielectrics

Absorption

Epoxies

Metals

Radar

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