面向5G应用的超宽带MIMO天线设计  

Design of Ultra-Wideband Multiple-Input Multiple-Output Antenna for 5G Applications

作　　者：王致远 杨福慧 杜成珠 魏书荣 WANG Zhiyuan;YANG Fuhui;DU Chengzhu;WEI Shurong(College of Electronics and Information Engineering,Shanghai University of Electric Power,Shanghai 200082,China;CETC Shanghai Microwave Communication Co.,Ltd.,Shanghai 201800,China)

机构地区：[1]上海电力大学电子与信息工程学院,上海200082 [2]中电科微波通信(上海)有限公司,上海201800

出　　处：《压电与声光》2025年第1期45-51,共7页Piezoelectrics & Acoustooptics

基　　金：教育部海上风电技术工程研究中心基金资助项目(A-2021-24-175)。

摘　　要：针对目前国内5G中频段的宽带覆盖问题以及面向未来6G系统在Sub-7 GHz频段的应用,设计了一款可覆盖5G频段的共面波导(CPW)馈电超宽带高隔离多输入多输出(MIMO)天线。单元天线以单个椭圆贴片为基础,通过添加三叉戟结构和切角操作实现了天线的超宽带特性。天线含有2个单元槽天线,可用于2×2的MIMO天线阵列,天线尺寸为118 mm×66 mm×0.8 mm。两个单元天线采用平行放置模式,且两个单元天线的地板互联,同时采用在天线单元间加载“H”形栏栅结构的方法以提高天线的隔离度。实测结果表明,天线的工作带宽为1.15~7.80 GHz,频段内的隔离度均大于20 dB,天线的包络相关系数小于0.03,分集增益大于9.98 dB。该MIMO天线具有高隔离度和超宽带覆盖的特点,同时天线采用了CPW馈电形式,更易应用于集成电路和各种超宽带系统。该天线在5G及未来6G系统中具有较好的应用前景。To address the broadband coverage challenges in the mid-band of 5G in China and to enable future applications of 6G systems in the sub-7 GHz frequency range,this paper presents the design of a coplanar waveguide(CPW)-fed ultra-wideband,high-isolation multiple-input multiple-output(MIMO)antenna that covers the 5G frequency bands.The antenna element is based on a single elliptical patch,and ultra-wideband performance is achieved by incorporating a trident-shaped structure and cornercutting techniques.The antenna consists of two slot antenna elements,suitable for a 2×2 MIMO antenna array configuration,with overall dimensions of 118×66×0.8 mm.The two antenna elements are arranged in a parallel configuration,with their ground planes interconnected.Additionally,an“H”-shaped fence structure is introduced between the elements to improve isolation.Experimental results showed that the antenna can operate across a bandwidth of 1.15-7.80 GHz,with isolation greater than 20 dB across the operating band.The envelope correlation coefficient(ECC)was below 0.03,and the diversity gain(DG)exceeded 9.98 dB.The designed MIMO antenna features high isolation and ultra-wideband coverage,and the CPW feeding structure facilitates its integration into integrated circuits and various ultra-wideband systems.This antenna showed promising application potential in both current 5G and future 6G systems.

关 键 词：5G 超宽带 槽天线 多输入多输出(MIMO) 高隔离度 

分 类 号：TN822[电子电信—信息与通信工程]