单端口椭圆环形OAM微带天线设计  

Single-feed elliptical ring orbital angular momentum antenna design

作　　者：范迪[1] 沈文辉[1] Zagham Abbas Aqeel 任芳 Fan Di;Shen Wenhui;Zagham Abhas Aqeel;Ren Fang(Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University,Shanghai 200072,China)

机构地区：[1]上海大学特种光纤与光接入网省部级共建重点实验室

出　　处：《电子测量技术》2018年第15期62-65,共4页Electronic Measurement Technology

摘　　要：近年来,微波波段中的轨道角动量（OAM）一直是研究的热点。在圆形贴片天线极化模式的基础上,提出了一种适用于2-6GHz的椭圆环形天线作为OAM波束发生器,该款天线满足在OAM模式为±1,±2和±3情况下的波束传输,只需通过改变椭圆环形的尺寸和馈电端口的位置等参数,就可以改变产生的OAM波束的模式。通过ANSYS HFSS仿真得到近场相位分布符合设计结果,各个模式识别度较高。相较于现有的OAM发生器存在馈电网络复杂等诸多问题,该天线结构简单,只需单端口馈电,便于加工测试,其嵌套组合模式多样,适用于OAM多模式复用,具有一定的理论意义和实用价值。Using orbital angular momentum（OAM）for the reuse of research is the current research focus.Based on the circular patch antenna polarization mode,an elliptical antenna suitable for 2-6 GHz is proposed as an OAM generator.This antenna satisfies the conditions of±1,±2 and±3 in OAM mode for the beam transmission,and the mode of the OAM beam can be changed simply by changing parameters such as the size of the elliptical ring and the position of the feed port.The near-field phase distribution obtained by ANSYS HFSS simulation,and each pattern has higher recognition.Compared with many problems of existing OAM generators,such as the complex feed network,its structure is simple,and only needs single-port feed,and it is easy to process and test.Its combination modes are various,so it is suitable for OAM multiplexing,which has a certain theoretical significance and practical value.

关 键 词：轨道角动量 椭圆环形 微带天线 

分 类 号：TN92[电子电信—通信与信息系统]