应用于5G的高隔离宽带MIMO手机天线设计  

Design of a High Isolation Broadband MIMO Antenna for 5G Mobile Phone

作　　者：王丽黎[1] 常雪迎 杜忠红 邓雯 WANG Li-li;CHANG Xue-ying;DU Zhong-hong;DENG Wen(College of Automation and Information Engineering,Xi′an University of Technology,Xi′an 710048,China)

机构地区：[1]西安理工大学自动化与信息工程学院,西安710048

出　　处：《微波学报》2023年第6期28-34,共7页Journal of Microwaves

基　　金：国家自然科学基金(61771389)。

摘　　要：为满足5G移动通信的需求,文中设计了一款宽频带天线单元,并基于此分别提出了4×4和8×8多输入多输出(MIMO)手机天线。两个天线单元“背对背”紧密放置组成一个自去耦天线对,4×4 MIMO手机天线由两个天线对构成。天线结构简单、尺寸紧凑,可以覆盖3.3~6.6 GHz的工作频带,隔离度优于15.5 d B。在4×4 MIMO手机天线的基础上,保持天线单元结构不变,通过合理布局,将四个天线单元与天线对内的天线单元分别“背对面”放置构成8×8 MIMO手机天线。仿真和测试结果表明,该天线在3.4~6.1 GHz的工作频带内各天线单元间隔离度优于15 d B,满足实际工程需求,同时,文中分析讨论了单手持模式下的天线性能。In order to meet the needs of 5G mobile communication,a broadband antenna unit is designed in this pa-per,and based on this,the paper proposes 4×4 and 8×8 multiple-input multiple-output(MIMO)mobile phone antennas,respectively.Two antenna units are closely placed"back-to-back"to form a self-decoupling antenna pair,and the 4×4 MI-MO mobile phone antenna is composed of two antenna pairs.The antenna structure is simple with compact size,which can cover the working band of 3.3~6.6 GHz,the isolation degree is better than 15.5 dB.On the basis of 4×4 MIMO mobile phone antenna,keep the antenna unit structure unchanged,through the reasonable layout,the four antenna units and the an-tenna units in the antenna pair are placed"back-to-face"to form 8×8 MIMO mobile phone antenna.The simulation and test results show that the isolation between antenna elements is better than 15 dB in the working band of 3.4~6.1 GHz,which meets the actual engineering requirements.At the same time,the performance of the antenna in single hand mode is analyzed and discussed.

关 键 词：5G MIMO 手机天线 高隔离 宽带 

分 类 号：TN929.5[电子电信—通信与信息系统] TN820[电子电信—信息与通信工程]