摘要
本文通过对产生轨道角动量(Orbital Angular Momentum,OAM)相控圆阵天线的研究,将电场中不同模式的轨道角动量分解出来,从而提出了OAM天线中纯度的定义和公式。基于此纯度理论,推导出均匀圆形相控阵的纯度公式及不同参数对纯度的影响,为比较轨道角动量的天线性能提供了一个直观的、可量化的维度。
In this paper,the orbital angular momentum of different modes in electric field is decomposed,and the definition of purity of OAM mode in OAM antenna are proposed.Based on the purity theory,the purity of circular array is derived.And the effects of different parameters on the purity are analyzed.An intuitive and quantifiable dimension for comparing the OAM performance in phased array antenna is provided in this paper.
作者
李莉
郭思滢
王雅琪
刘聪
尹霄丽
LI li;GUO Si-ying;WANG Ya-qi;LIU Cong;YIN Xiao-li(School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China)
出处
《新一代信息技术》
2019年第3期14-17,共4页
New Generation of Information Technology
基金
国家自然科学基金(项目编号:No.61575027)。
关键词
轨道角动量(OAM)
相控阵天线
模式纯度
圆阵
Orbital angular momentam(OAM)
Phased array antenna
Mode purity
Uniform circular array(UCA)
