基于多环结构的八模态涡旋波微带天线  

Eight-mode OAM microstrip antenna based on multi-ring structure

作　　者：朱茂华 梁仙灵[1] 姚羽[1] 耿军平[1] 朱卫仁 金荣洪[1] ZHU Maohua;LIANG Xianling;YAO Yu;GENG Junping;ZHU Weiren;JIN Ronghong(Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学,上海200240

出　　处：《电波科学学报》2018年第4期455-462,共8页Chinese Journal of Radio Science

基　　金：国家自然科学基金(61571298);863计划(2015AA7124058)

摘　　要：介绍了一种多模态涡旋电磁波单元天线设计方法.利用四个同心短路圆环微带贴片产生八模态的涡旋电磁波波束.该单元天线结构简单,尺寸小.仿真与实验结果表明,八个模态(l=±1,±2,±3,±4)均拥有良好的涡旋相位特性,相应阶数的单元增益分别为4.8 dBi,4.1 dBi,5.1 dBi,5.3 dBi,各模态的阻抗带宽均大于100MHz.该天线为多模涡旋电磁波应用提供了一种新的可能.This paper presents a multi-mode orbital angular momentum（OAM） wave element antenna design. These eight-mode OAM beams are generated simultaneously using four concentric shorted annular ring microstrip patches, and the antenna is simple in structure and small in size. Simulation and test re- sults show that eight modes （l=± 1,± 2, ± 3, ± 4） have good vortex phase characteristics. Mean- while, the element gains of corresponding modes are 4.8 dBi, 4.1 dBi, 5.1 dBi, and 5.3 dBi, respectively, and the impedance bandwidth of all modes are greater than 100 MHz. It can provide a new possibility for future multi-mode OAM wave applications.

关 键 词：涡旋波 短路圆环 微带贴片 端口隔离 多模态 

分 类 号：TN822.4[电子电信—信息与通信工程]