Convergence of OAM Beams Using Time-Modulated Concentric Circular Arrays

被引：0
|
作者：
Wang, Yang [1 ]
Liu, Jie [1 ]
Hu, Tao [1 ]
Jie, Wenjun [1 ]
Yang, Donghua [1 ]
Tennant, Alan [2 ]
机构：
[1] Chongqing Univ Posts & Telecommun, Sch Commun & Informat Engn, Chongqing, Peoples R China
[2] Univ Sheffield, Dept Elect & Elect Engn, Sheffield, S Yorkshire, England
来源：
2020 14TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP 2020) | 2020年
基金：
中国国家自然科学基金;
关键词：
orbital angular momentum; time-modulated concentric circular arrays; genetic algorithm; sidelobe suppression;
D O I：
暂无
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, time modulation technique is applied to concentric circular arrays for synthesizing orbital angular momentum (OAM) beams with lower sidelobe levels. Compared with traditional concentric circular arrays, time-modulated concentric circular arrays (TMCCAs) add a high-speed RF switch to each array element. TMCCAs can simultaneously generate multiple OAM beams by periodically controlling the working state of elements. Furthermore, the genetic algorithm (GA) is exploited to optimize the switch-on duration of elements. Results show that under the condition of equal amplitude excitation, TMCCAs can successfully synthesize lower sidelobe OAM beams.
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页数：3
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