A Low-Divergence Circularly Polarized Dual-Mode OAM Antenna Based on Higher Order Laguerre-Gaussian Modes

被引：17
|
作者：
Li, Yuan-Long [1 ,2 ,3 ]
Luk, Kwai-Man [1 ,2 ,3 ]
机构：
[1] City Univ Hong Kong, State Key Lab Terahertz & Millimeter Waves, Hong Kong 518057, Peoples R China
[2] City Univ Hong Kong, Dept Elect Engn, Hong Kong 518057, Peoples R China
[3] City Univ Hong Kong, Shenzhen Res Inst, Shenzhen 518057, Peoples R China
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2021年 / 69卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Laguerre-Gaussian mode; open resonator antenna (ORA); orbital angular momentum (OAM); ORBITAL ANGULAR-MOMENTUM; FABRY-PEROT CAVITY; WIDE-BAND; GAIN; BEAM; LIGHT; ARRAY;
D O I：
10.1109/TAP.2021.3060028
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 open resonator antenna for orbital angular momentum (OAM) generation and dual-mode application is proposed. The excitation of OAM mode is deduced by the open resonator theory and the circular array theory. In the cavity, eight aperture coupled patch antenna elements are used to excite two higher-order Laguerre-Gaussian HE21 modes with a 90 degrees phase difference. Verifying by simulation and experiment, the proposed low-profile antenna can radiate left-hand or right-hand circularly polarized waves of OAM modes l = +/- 1, which have a relatively low divergence angle of +/- 9 degrees and high gain of around 13 dBi.
引用
收藏
页码：5215 / 5223
页数：9
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