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一种抑制多径影响的全向高增益天线

傅强之 赵云

傅强之,赵云. 一种抑制多径影响的全向高增益天线[J]. 电波科学学报,xxxx,x(x): x-xx. DOI: 10.12265/j.cjors.2021281
引用本文: 傅强之,赵云. 一种抑制多径影响的全向高增益天线[J]. 电波科学学报,xxxx,x(x): x-xx. DOI: 10.12265/j.cjors.2021281
FU Q Z, ZHAO Y. Design of high gain omni-directional antenna for suppressing multipath effect[J]. Chinese journal of radio science,xxxx,x(x): x-xx. (in Chinese). DOI: 10.12265/j.cjors.2021281
Citation: FU Q Z, ZHAO Y. Design of high gain omni-directional antenna for suppressing multipath effect[J]. Chinese journal of radio science,xxxx,x(x): x-xx. (in Chinese). DOI: 10.12265/j.cjors.2021281

一种抑制多径影响的全向高增益天线

doi: 10.12265/j.cjors.2021281
详细信息
    作者简介:

    傅强之:(1987—),男,四川人,西南电子技术研究所高级工程师,硕士,研究方向为航空电子技术、天线技术及应用

    赵云:(1984—),男,安徽人,陆装驻景德镇地区航空军代室工程师,硕士,研究方向为航空电子

    通讯作者:

    傅强之 E-mail: fuqiangzhi@163.com

  • 中图分类号: TN821+.4

Design of high gain omni-directional antenna for suppressing multipath effect

  • 摘要: 为抑制机载异形地板多径效应对天线方向图的影响,本文提出了一种抑制多径影响的全向高增益垂直极化天线. 该天线由四个对称分布的蝶形偶极子单元构成,阵子臂采用渐变结构来展宽带宽. 蝶形电偶极子依次布置于微带地板走线两侧,可优化水平面方向图不圆度. 设置四个垂直分布的蝶形电偶极子的馈电相位来降低天线方向图的打地电平,进而抑制地板多径效应的影响. 通过理论分析及电磁仿真计算,确定了天线的最优结构以及单元馈电相位差,并进行了实物加工和测量. 实测结果表明,在约束尺寸下四单元相位差为25°时能够有效抑制由Y轴长地板引起的多径零深,实测与仿真结果吻合较好. 该天线的提出为安装于异形地板上的高增益天线阵提供了一种抑制多径影响的方案.
  • 图  1  2×1蝶形电偶极子单元结构

    Fig.  1  The structure of 2×1 bowtie dipole

    图  2  2×1蝶形电偶极子单元H面E面方向图

    Fig.  2  E and H pattern of 2×1 bowtie dipole

    图  3  垂直极化高增益水平全向天线

    Fig.  3  Structure of high gain vertical polarization omni-directional antenna

    图  4  天线在金属地板上的安装位置

    Fig.  4  The location of antenna on the PEC ground

    图  5  $ \pm y$轴方向上天线远场多径传播模型

    Fig.  5  The multipath model on the $ \pm y$ axis orientation

    图  6  HFSS 电仿真模型

    Fig.  6  HFSS simulation model

    图  7  高增益天线俯仰面垂直极化增益方向图 $\varphi = {90^o}$

    Fig.  7  The pitch gain pattern of the high gain antenna for $\varphi = {90^o}$

    图  8  高增益天线俯仰面垂直极化增益方向图($\varphi = {0^o}$)

    Fig.  8  The pitch gain pattern of the high gain antenna for $\varphi = {0^o}$

    图  9  高增益天线水平面垂直极化增益方向图($\theta = {75^o}$)

    Fig.  9  The azimuth gain pattern of the high gain antenna for $\theta = {75^o}$

    图  10  不同频率下阵元相位差

    Fig.  10  The phase difference of the array elements at different frequency

    图  11  高增益天线实物图

    Fig.  11  The picture of high gain antenna

    图  12  高增益天线俯仰面垂直极化增益方向图 $\varphi = {90^o}$

    Fig.  12  The pitch gain pattern of the high gain antenna for $\varphi = {90^o}$

    图  13  高增益天线俯仰面垂直极化增益方向图 $\varphi = {0^o}$

    Fig.  13  The pitch gain pattern of the high gain antenna for $\varphi = {0^o}$

    图  14  高增益天线水平面垂直极化增益方向图($\theta = {75^o}$)

    Fig.  14  The azimuth gain pattern of the high gain antenna for $\theta = {75^o}$

    表  1  不同频点波束指向理论和仿真结果

    Tab.  1  Theoretical analysis and simulation results of beam-steering

    频率/GHz理论指向/(°)仿真指向/(°)
    1.3514.013
    1.5513.913
    1.7513.813
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-10-21
  • 录用日期:  2022-05-07
  • 网络出版日期:  2022-05-07

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