Orbital Angular Momentum Generation Using Circular Ring Resonators in Radio Frequency  

作　　者：Fu-Chun Mao Ming Huang Cheng-Fu Yang Ting-Hua Li Jia-Lin Zhang Si-Yu Chen 毛福春;黄铭;杨成福;李廷华;张加林;陈思宇(School of Information Science and Engineering,Yunnan University,Kunming 650091;Center of China Tobacco Yunnan Industrial Co.Ltd.Kunming 65023;Radio Monitoring Center of Yunnan Province,Kunming 650228)

机构地区：[1]School of Information Science and Engineering,Yunnan University,Kunming 650091 [2]Center of China Tobacco Yunnan Industrial Co.Ltd.Kunming 65023 [3]Radio Monitoring Center of Yunnan Province,Kunming 650228

出　　处：《Chinese Physics Letters》2018年第2期11-15,共5页中国物理快报(英文版)

基　　金：Supported by the National Natural Science Foundation of China under Grant No 61461052;the Specialized Research Fund for the Doctoral Program of Higher Education under Grant No 20135301110003;the Seventh of Yunnan University Graduate Student Scientific Research Project under Grant No ynuy201443;the Doctoral Award for the Academic Newcomers(2014)of Yunnan Province under Grant No C6155501

摘　　要：Electromagnetic field generators based on circular ring resonators,whose perimeters are integer times of equivalent wavelength,are well known to have attractive potential for producing radio vortexes carrying orbital angular momentum(OAM).We study the radiation characteristics of the generators based on radiation vector and antenna array theory.The behaviors of radiation patterns,field intensity and phase distribution are investigated in detail,and show classical features of OAM beams.The evolution of the generators performance versus the OAM state is also analyzed.The proposed generators can be realized by all kinds of microwave transmission lines,verified by two different prototypes.The discussions and conclusions drawn in this study are useful and meaningful for the radio OAM generator design.

分 类 号：TN751.2[电子电信—电路与系统]