基于超材料混合解耦结构的超宽带MIMO天线  

A nonagon-shaped MIMO antenna with metamaterial based hybrid decoupling structures for UWB applications

作　　者：郑学梅[1] 吴翰 赵紫微 ZHENG Xue-mei;WU Han;ZHAO Zi-wei(Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education,Northeast Electric Power University,Jilin 132012,China;School of Electrical Engineering,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]东北电力大学现代电力系统仿真控制与绿色电能新技术教育部重点实验室,吉林吉林132012 [2]东北电力大学电气工程学院,吉林吉林132012

出　　处：《陕西科技大学学报》2025年第2期178-187,共10页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(61803356);东北电力大学博士科研启动基金项目(BSIXM-2021207)。

摘　　要：提出了一种基于超材料的九边形超宽带天线,由两个九边形的辐射单元和中间的T形接地面构成,并通过蚀刻H形槽线进一步改善了中高频的阻抗匹配.为了进一步提高天线的隔离度,设计了由一种矩形开口谐振环和矩形互补开口谐振环构成的混合解耦结构,加载到MIMO天线中.整个天线的工作频段为3.2~11.2 GHz,经过HFSS仿真分析,相比未加载混合解耦结构的天线,提出的天线在绝大部分频段的隔离度有了明显的提高,整个工作频段的隔离度大于20 dB.并对天线的表面电流,远场性能,分集性能通过HFSS仿真进行了分析,分析结果表明该天线非常适合应用于超宽带通信的场景中.In this paper,a metamaterial-based nonagon-shaped ultra-wideband antenna is proposed,which consists of two nonagon-shaped radiating units and a modified T-shaped ground plane in the middle.In order to further improve the isolation of the antenna,a hybrid decoupling structure with rectangular split ring resonator and complementary split ring resonator is designed and loaded onto the antenna design.An operating band of 3.2~11.2 GHz is achieved,along with isolation greater than 20 dB almost throughout the operating band.The simulation result demonstrates that the proposed hybrid decoupling structure has a good broadband decoupling characteristic,which can be applied in decoupling for various UWB MIMO scenarios.The antenna was simulated in HFSS environment,its envelope correlation coefficient(ECC),diversity gain(DG),surface current and radiation characteristics were analyzed,based on the analysis of the simulations result,it is demonstrated that the antenna is well suited for applications in future′s ultra-wideband communication scenarios.

关 键 词：超材料 超宽带 解耦 开口谐振环 MIMO 

分 类 号：TN822[电子电信—信息与通信工程]