电子测量与仪器学报

高明明,宋杨,南敬昌,李春晨.紧凑型超宽带 MIMO 天线的研究[J].电子测量与仪器学报,2022,36(1):149-156

紧凑型超宽带 MIMO 天线的研究

Research of a compact UWB-MIMO antenna with X band-rejected

DOI：

英文关键词:ultra-wideband multiple-input multiple-output antenna band-notched EBG decoupling structure isolation

基金项目:国家自然科学基金青年科学基金(61701211)、国家自然科学基金(61971210)、辽宁省特聘教授项目(551806006)资助

作者	单位
高明明	1. 辽宁工程技术大学电子与信息工程学院，2. 大连海事大学信息科学技术学院
宋杨	1. 辽宁工程技术大学电子与信息工程学院
南敬昌	1. 辽宁工程技术大学电子与信息工程学院
李春晨	1. 辽宁工程技术大学电子与信息工程学院

Author	Institution
Gao Mingming	1. School of Electrics and Information Engineering, Liaoning Technical University,2. School of Information Science and Technology, Dalian Maritime University
Song Yang	1. School of Electrics and Information Engineering, Liaoning Technical University
Nan Jingchang	1. School of Electrics and Information Engineering, Liaoning Technical University
Li Chunchen	1. School of Electrics and Information Engineering, Liaoning Technical University

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中文摘要:

针对当前超宽带多输入多输出(UWB-MIMO)天线存在尺寸大、隔离度低等缺陷,设计了一款紧凑型 UWB-MIMO 天线, 天线尺寸仅有 41 mm×25 mm×1. 6 mm。通过扳手形微带馈线扩宽天线的带宽,在天线的接地平面上引入锯齿形和梳状电磁带隙结构以获得较高的隔离度;加载 C 形枝节形成陷波以抑制 X 波段的下行频段对超宽带系统的干扰。实验结果表明,所设计的 UWB-MIMO 天线的阻抗带宽为 3. 1 ~ 12. 0 GHz,陷波频带为 7. 0 ~ 7. 9 GHz;在整个工作带宽内,隔离度大于 20 dB。设计的 UWB-MIMO 天线具有良好的辐射特性、稳定的增益和较低的包络相关系数(ECC<0. 006),适用于 UWB-MIMO 系统应用。

英文摘要:

In order to meet the requirements of miniaturization and high isolation MIMO antenna in wireless communication system, a compact UWB multiple-input multiple-output (MIMO) antenna with high isolation between units is proposed. The antenna size is only 41 mm×25 mm×1. 6 mm. The compact UWB MIMO antenna using a spanner microstrip line to widen bandwidth, Serrated grounding structure and comb-shaped electromagnetic band gap ( EBG) structure on the ground plane of the antenna helps to obtain higher isolation, introducing C-shaped branches on the antenna discards worldwide interoperability for X-Band satellite downlink communication band. The optimization of various parameters proves that the proposed UWB-MIMO antenna satisfies the port reflection coefficient S11 < -10 dB in the 3. 1~ 12. 0 GHz band, and the notch band is 7. 0 ~ 7. 9 GHz, the isolation is greater than 20 dB in the entire working bandwidth. The UWB-MIMO antenna designed in this paper has good radiation characteristics, stable gain and low envelope correlation coefficient (ECC<0. 006), which is suitable for UWB-MIMO system applications.

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