通过1位可编程超表面天线生成多模式OAM光束
Morteza Nadi1, Seyed Hassan Sedighy2, Ahmad Cheldavi1
1School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran.
Scientific reports
|September 21, 2023
概括
这项研究引入了一种新的1位可编程超表面天线,用于生成高效,动态的多模式轨道角动量 (OAM) 束. 这一创新提高了现代无线通信系统的通道容量.
科学领域:
- 电磁学 电磁学 电磁学 电磁学
- 无线通信无线通信
- 超材料是什么?超材料是什么?
背景情况:
- 轨道角动量 (OAM) 束对于提高无线通信中的通道容量至关重要.
- 现有的用于OAM光束生成的可编程元表面由于反射/传输模式而受到低光圈效率的影响.
- 需要有效和动态的OAM光束生成方法.
研究的目的:
- 提出一种新的1位可编程超表面天线.
- 为了实现高效和动态的多模式OAM光束生成.
- 为了克服当前OAM光束生成技术的局限性.
主要方法:
- 使用由PIN二极管加载的电子可重新配置的元辐射元件,用于双相电场状态.
- 使用现场可编程网关数组 (FPGA) 进行实时代码序列分配.
- 制造和测量超表面天线以验证性能.
主要成果:
- 展示了一个1位可编程的超表面天线,能够产生动态的多模式OAM光束.
- 通过克服溢出和照明效应,实现了高光圈效率.
- 实验测量证实了对各种OAM状态的全波模拟的一致性.
结论:
- 拟议的超表面天线为生成多模式OAM光束提供了一个有能力的替代方案.
- 这项技术适用于高通量毫米波 (mm-wave) 通信系统.
- 通过可编程元表面对OAM束进行动态控制,为无线通信开辟了新的途径.
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