Metasurfaces for Wideband and Efficient Polarization Rotation

被引：77
作者：
Karamirad, Mohsen [1 ,2 ]
Ghobadi, Changiz [1 ,2 ]
Nourinia, Javad [1 ,2 ]
机构：
[1] Urmia Univ, Northwest Antenna & Microwave Res Lab NAMRL, Orumiyeh 57153, Iran
[2] Urmia Univ, Dept Elect Engn, Orumiyeh 57153, Iran
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2021年 / 69卷 / 03期
关键词：
Wideband; Frequency conversion; Strips; Surface impedance; Impedance; Reflection; Resonant frequency; Equivalent impedance surface (EIS); low profile; metasurfaces; polarization converter; wideband; CONVERSION; DESIGN;
D O I：
10.1109/TAP.2020.3012828
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An efficient wideband polarization-rotation thin metasurface based on oval pattern is presented. The aim of this structure is to manipulate the polarization of incident electromagnetic waves in reflect band. The oval pattern is split by strip lines to outperform the results. It is shown that the proposed polarization converter converts the incident linearly or circularly polarized waves into orthogonal counterpart over a frequency band of 10.2-20.5 GHz. A prototype of the proposed structure is fabricated to validate the numerical simulation. The experimental and simulation results confirm that polarization conversion ratio (PCR) is greater than 90% at the same frequency band with high stability to oblique incidence angle. Numerical simulation reveals that the strong electric and magnetic resonances between top and bottom layers lead to wideband polarization conversion. Equivalent impedance surface method is discussed to further analysis the polarization conversion mechanism.
引用
收藏
页码：1799 / 1804
页数：6
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