基于超薄超表面的散射抑制

2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI:10.1109/METAMATERIALS.2015.7342440

Jie Zhao, Q. Cheng, M. Qi, T. Cui

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引用次数: 0

摘要

我们提出了一种基于超薄超表面的宽频带抑制散射的方法。设计的超表面由两种不同几何形状和反射相位的单元组成，在大多数反射方向上提供相消干涉，显著抑制了散射方向图的主瓣和副瓣。两个单元的共振频率经过精心设计，以拓宽频段。全波数值模拟结果表明，采用厚度为1 mm的超表面可获得1.74 GHz的大带宽，抑制散射至少10 dB。提出的超表面可以在一系列领域得到广泛的应用。

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Suppression of scattering based on an ultrathin metasurface

We propose a method to suppress the scattering based on an ultrathin metasurface in a broad frequency band. The designed metasurface is composed of two kinds of units with different geometries and reflection phases, which provide destructive interference in most of reflected directions, suppressing the main lobe and side lobes significantly of the scattering pattern. The resonance frequencies of two units are elaborately designed to broaden the frequency band. Full-wave numerical simulation results show that a large bandwidth of 1.74 GHz is achieved using the proposed metasurface with the thickness 1 mm, which suppresses the scattering by at least 10 dB. The proposed metasurface may find wide applications in a series areas.

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2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)

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