Low-profile wideband dual-circularly polarized orbital angular momentum antenna array using metasurface

被引：5
|
作者：
Zhou, Chenyu [1 ,2 ]
Yang, Wanchen [1 ]
Xue, Quan [1 ]
Che, Wenquan [1 ]
机构：
[1] South China Univ Technol, Sch Elect & Informat Engn, Guangdong Key Lab Millimeter Waves & Terahertz, Guangzhou 510641, Peoples R China
[2] Nanjing Elect Device Inst, Nanjing, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2021年 / 63卷 / 04期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
dual circular polarization (CP); orbital angular momentum (OAM); polarization-rotation metasurface (PRMS); wideband;
D O I：
10.1002/mop.32656
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：
A novel wideband dual-circularly polarized orbital angular momentum (OAM) antenna array using metasurface is proposed. The proposed antenna array composed of four antenna elements generates OAM beams in a simple configuration. Each antenna element is placed perpendicularly to the adjacent one, and fed by an in-phase excitation with equal amplitude. Each antenna element is based on corner-truncated polarization-rotation metasurface (PRMS) cells and excited by a dual-feeding structure through a cross-like slot, which can realize wideband dual circular polarization (RHCP, LHCP). The proposed antenna array produces dual-mode OAM mode waves (l = +/- 1) and exhibits good dual-circularly polarized performances in a low profile of 0.068 lambda(0). The measured results show wide impedance bandwidths of 30% for LHCP and 26.6% for RGCP. Also, the large axial ratio bandwidths ARBWs of the OAM antenna array are 20% for LHCP and 14% for RHCP.
引用
收藏
页码：1207 / 1212
页数：6
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