Ultra-broadband OAM generator of high-efficiency, high-purity vortex electromagnetic waves based on an ultrathin reflective Pancharatnam-Berry metasurface for the microwave band

被引：0
作者：
Zhu, Yongzhong [1 ]
Zou, Fangxuan [2 ]
Xie, Wenxuan [1 ]
Zuo, Kaiwei [3 ]
Xiong, Bao [1 ]
机构：
[1] Engn Univ Peoples Armed Police, Coll Informat Engn, Xian, Shaanxi, Peoples R China
[2] Natl Univ Def Technol, Coll Elect Engn, Hefei, Anhui, Peoples R China
[3] China Coast Guard Acad, Ningbo, Zhejiang, Peoples R China
来源：
IET MICROWAVES ANTENNAS & PROPAGATION | 2024年
基金：
中国国家自然科学基金;
关键词：
high-efficiency; metasurface; OAM; reflective; ORBITAL ANGULAR-MOMENTUM; ARRAY;
D O I：
10.1049/mia2.12513
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：
In this paper, a new arc-shaped meta-atom like a fishbone controlled by Pancharatnam-Berry (PB) phase is designed for a microwave band, which can yield a high-purity vortex electromagnetic (EM) waves ranged from 10.63 to 26.86 GHz (relative bandwidth of 86.6%) with an efficiency of more than 90%. A single-beam metasurface with m $m$ = +1, -2 and +3 modes is designed, respectively. Finally, a prototype with m $m$ = -2 mode is manufactured in order to prove the feasibility of the designed metasurface. It shows that the experimental results are in good agreement with the ones of the simulation, which verified the excellent performance of the metasurface. The metasurface has a series of edges such as ultra-broadband, high efficiency, high purity and low profile compared to the conventional metasurfaces, which have strong practical applied value and significance for wireless communication.
引用
收藏
页码：964 / 973
页数：10
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