Generation of Vortex Electromagnetic Waves Based on Helical Antenna

被引：0
|
作者：
Shao, Qing yao [1 ]
Xue, Hao [1 ]
Li, Long [1 ]
机构：
[1] Xidian Univ, Dept Elect Engn, Xian, Shaanxi, Peoples R China
来源：
2019 INTERNATIONAL APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY SYMPOSIUM - CHINA (ACES), VOL 1 | 2019年
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
Orbital angular momentum; Vortex electromagnetic wave; Helical antenna; Traveling wave antenna;
D O I：
10.23919/aces48530.2019.9060473
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：
The vortex electromagnetic wave has a spiral phase wavefront structure when propagating, and the vortex electromagnetic waves having different orbital angular momentum (OAM) modes are orthogonal to each other. Compared with other OAM radio generating methods, the helical antenna has the advantages of light weight, small size, and good circular polarization. In this paper, a helical antenna operating at 2-2.4 GHz with OAM mode l = 2 is designed. The simulation results show that a good OAM vortex wave can be generated in the working frequency band of the antenna. In addition, based on the special circular polarization characteristics of the helical antenna, by forming a quaternary antenna array, it is possible to generate a vortex electromagnetic wave with an orbital angular momentum mode of l = 3. Compared to conventional uniform circular array antennas, the circular array based on a helical antenna can produce a higher order OAM modality while reducing the number of array elements.
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收藏
页数：2
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