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Quad-Band Transmissive Metasurface with Linear to Dual-Circular Polarization Conversion Simultaneously
Advanced Theory and Simulations ( IF 2.9 ) Pub Date : 2021-07-08 , DOI: 10.1002/adts.202100117
Zhuo Yue Li 1 , Si Jia Li 1, 2 , Bo Wen Han 1 , Guo Shuai Huang 1 , Ze Xu Guo 1 , Xiang Yu Cao 1
Affiliation  

Metasurface is a momentous periodic or aperiodic microstructure which has capabilities in controlling polarization of electromagnetic waves. To realize polarization controlling, many microstructures have been designed to achieve the function. However, multi-band linear to dual-circular polarization converter is rarely proposed and designed in the last few years. Here, a quad-band dual-circular transmissive metasurface (QCT-MS) is proposed to manipulate polarization of transmissive wave. QCT-MS is designed as a three-layer microstructure, with substrate in the middle and two metal patches in the shape of bi-symmetrical arrow on both sides. The proposed microstructure manipulates linear polarization waves to dual-circular polarization waves in different frequency bands with x-polarized or y-polarized incident waves. The experimental and simulated results reveal that left-hand circularly polarized waves can be realized in 3.14–3.32, 4.41–4.46, and 14.82–16.05 GHz while the right-hand circularly polarized waves can be achieved from 9.45 to 10.12 GHz for QCT-MS with x-polarized incidences. Moreover, the simulated results also demonstrate its characteristics of wide-angle transmission and periodic changes. The proposed transmissive metasurface can be utilized in multiband communication and multifunctional dual-circularly polarized antenna systems.

中文翻译:

同时具有线性到双圆偏振转换的四波段透射超表面

超表面是一种重要的周期性或非周期性微结构,具有控制电磁波极化的能力。为了实现偏振控制,人们设计了许多微结构来实现这一功能。然而,近几年很少有人提出和设计多波段线性转双圆偏振转换器。在这里,提出了一种四波段双圆透射超表面(QCT-MS)来操纵透射波的极化。QCT-MS设计为三层微结构,中间为基板,两侧为双对称箭头形状的两个金属贴片。所提出的微结构将线偏振波操纵成不同频段的双圆偏振波,x偏振或y- 极化的入射波。实验和模拟结果表明,左旋圆极化波可以在 3.14-3.32、4.41-4.46 和 14.82-16.05 GHz 范围内实现,而右旋圆极化波可以在 9.45-10.12 GHz 范围内实现 QCT-MS与X偏振光的发生率。此外,模拟结果还展示了其广角传输和周期性变化的特点。所提出的透射超表面可用于多频带通信和多功能双圆极化天线系统。
更新日期:2021-08-07
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