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 |
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DOI: |
中文关键词: 超宽带 MIMO 天线 陷波 EBG 去耦结构 隔离度 |
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 |
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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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