Broadband Polarization Manipulation Based on W-Shaped Metasurface

Broadband Polarization Manipulation Based on W-Shaped Metasurface
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基于W形超表面的宽带偏振操控

DOI:
10.3389/fmats.2022.850020
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发表时间:
2022-03
影响因子:
3.2
通讯作者:
Yong Sun
Yong Sun
中科院分区:
材料科学3区
文献类型:
--
作者:
Guangyuan Xu;Lei Gao;Yongqiang Chen;Yaqiong Ding;Jun Wang;Yu Fang;Xingzhi Wu;Yong Sun

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我们提出了一种由W形谐振腔组成的超颖表面,以实现宽带反射式线偏振和圆偏振转换。结果表明,在9.2 ~ 18.7GHz的频率范围内,垂直入射时的交叉极化转换比大于0.95,覆盖了中心频率的68.1%。我们还表明,转换性能几乎是不敏感的入射波的角度。此外,通过简单地调整W形超颖表面的几何参数,也实现了宽带圆偏振转换。我们强调轴比小于3.0dB的带宽覆盖了10.1 ~ 17.7GHz,相当于54.7%的相对带宽。由于这些宽带和高效率的偏振转换特性,我们的方案可能有广泛的应用前景。
We present a metasurface consisting of W-shaped resonators to realize broadband reflective linear and circular polarization conversions. We find that the cross polarization conversion ratio for normal incidence is over 0.95 from 9.2 to 18.7GHz, covering 68.1% of the central frequency. We also show that, the conversion performance is almost insensitive to the angle of incident waves. Furthermore, by simply adjusting the geometrical parameters of the W-shaped metasurface, the broadband circular polarization conversion is also achieved. We emphasize that the bandwidth of axis ratio less than 3.0dB covers from 10.1 to 17.7GHz, equivalent to 54.7% relative bandwidth. Due to these broadband and high-efficiency polarization conversion features, our proposal may have a wide application prospect.
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