一种小型化超宽带MIMO天线的设计  

Design of a Miniaturized Ultra-wideband MIMO Antenna

作　　者：杨阔 刘川 YANG Kuo;LIU Chuan(Institute of Applied Physics,Aba Teachers University,Wenchuan 623002,China)

机构地区：[1]阿坝师范学院应用物理研究所,四川汶川623002

出　　处：《无线电工程》2020年第9期775-779,共5页Radio Engineering

基　　金：四川省教育厅重点科研项目(18ZA0004);阿坝师范学院科研项目(ASB 20-06)。

摘　　要：针对无线通信系统中对超宽带MIMO天线的小型化和高隔离度的要求,研究设计了一种小型化超宽带MIMO天线。天线由半切类圆形单极子天线对称放置,天线单元之间通过合理增加T形隔离结构组成。研究表明,该方法可以实现MIMO天线的小型化和高隔离度。通过三维电磁仿真软件建模仿真优化,得出天线的平面尺寸为22 mm×28 mm,天线的相对带宽为81.9%,满足超宽带要求,工作频段内隔离度大于15 dB,具有结构简单、尺寸小的特点。Aiming at the requirement of miniaturization and high isolation of UWB MIMO antenna in wireless communication system,a miniaturized UWB-MIMO antenna is designed.The antenna consists of half cut quasi-circular monopole antenna placed symmetrically,and a T-shaped isolation structure is reasonably added between the antenna elements.The research shows that this method can realize the miniaturization and high isolation of MIMO antenna.Based on the simulation and optimization of three-dimensional electromagnetic simulation software,the plane size of the antenna is 22 mm×28 mm,and the relative bandwidth of the antenna is 81.9%,which meets the requirements of ultra wideband.The isolation in the operating frequency band is more than 15 dB.The proposed antenna has the advantages of simple structure and small size.

关 键 词：小型化 超宽带 MIMO天线 高隔离度 

分 类 号：O441.4[理学—电磁学]