Quad-OAM-beam based on a coding transmissive metasurface

被引：8
|
作者：
LI, Zhuoyue [1 ]
LI, Sijia [1 ,2 ,3 ]
Huang, Guoshuai [1 ]
Liu, Xiaobin [1 ]
Cao, Xiangyu [1 ,3 ]
机构：
[1] Air Force Engn Univ, Informat & Nav Coll, Xian 710077, Peoples R China
[2] Southeast Univ, Sch Informat Sci & Engn, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China
[3] Air Force Engn Univ, Shaanxi Key Lab Artificially Struct Funct Mat & De, Xian 710051, Peoples R China
来源：
OPTICAL MATERIALS EXPRESS | 2022年 / 12卷 / 09期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
VORTEX BEAMS; BROAD-BAND; GENERATION; ANTENNA; ARRAY;
D O I：
10.1364/OME.465493
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A coding transmissive metasurface is presented for -1 mode quad-OAM-beam generation in 9.2-9.4 GHz. The 3bit metasurface is designed based on Pancharatnam-Berry (PB) phase principle, which is fed by a linear horn antenna. To satisfy the phase requirement of quad-OAM-beam, the phase compensation is introduced in the design for transmitting spherical waves into plane waves and promoting the directionality of incidence. The prototype of the metasurface is fabricated and measured. The experimental results coincide with theoretical analysis. Additionally, the OAM efficiency and purity are calculated to reveal the perfect performance of the metasurface. The proposed method has potential application in multi-channel wireless communication systems. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
引用
收藏
页码：3416 / 3428
页数：13
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