产生多OAM模态的单馈椭圆天线  

Singly fed elliptical antenna generating multiple OAM modes

作　　者：韩月月 刘欢 杜永兴[1] 李敏超 李晨璐 HAN Yueyue;LIU Huan;DU Yongxing;LI Minchao;LI Chenlu(School of Information Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学信息工程学院,内蒙古包头014010

出　　处：《传感器与微系统》2025年第2期100-103,共4页Transducer and Microsystem Technologies

基　　金：内蒙古自然科学基金资助项目(2021MS06021);国家自然科学基金资助项目(61961033);内蒙古自治区研究生教育教学改革研究与实践项目(YJG20191012710);内蒙古自治区科技重大专项项目(2019ZD025)。

摘　　要：阵列天线可以有效地辐射涡旋电磁波,但该方法难以实时辐射多种模态,且其尺寸较大,馈电网络也非常复杂。涡旋天线的单贴片结构设计可以有效地简化馈电,减小天线尺寸。通过将不同模态的贴片集成到同一个介质板上,可以实现实时多模态传输。然而,目前贴片涡旋天线仍采用2个或2个以上的馈电点进行馈电,形成阵列后仍有庞大的馈电系统。本文提出了一种单点馈电的椭圆环形天线,并利用这种结构设计了8种模态的涡旋天线。天线的最大尺寸为8 mm。通过在微波暗室测试,证明了提出的椭圆天线成功地产生8种模态的涡旋电磁波。该结构的实现使得以不同模态贴片天线为阵元的涡旋阵列天线的设计更加容易。Array antennas can effectively radiate vortex electromagnetic waves,but this method is difficult to radiate multiple modes in real-time,and its size is large,and the feeding network is also very complicated.The single-patch structure design of the vortex antenna can effectively simplify the feed and reduce the antenna size.By integrating patches of different modalities into the same dielectric board,real-time multi-modal transmission can be realized.However,the current patch vortex antenna still uses two or more feed points to feed,and it still has a huge feed system after forming an array.A single-point-fed elliptical loop antenna is proposed,and eight kinds of modes of vortex antennas are designed using this structure.The maximum size of the antenna is 8mm.The proposed elliptical antenna is demonstrated to successfully generate vortex electromagnetic waves in eight modes by testing in a microwave darkroom.The realization of this structure makes the design of the vortex array antenna using different modal patch antennas as the array element easier.

关 键 词：椭圆贴片天线 轨道角动量 圆极化 微带 

分 类 号：TN92[电子电信—通信与信息系统]