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一种新颖的宽带圆极化单极天线

李振亚 竺小松 张建华

李振亚, 竺小松, 张建华. 一种新颖的宽带圆极化单极天线[J]. 电子与信息学报, 2018, 40(11): 2705-2711. doi: 10.11999/JEIT180094
引用本文: 李振亚, 竺小松, 张建华. 一种新颖的宽带圆极化单极天线[J]. 电子与信息学报, 2018, 40(11): 2705-2711. doi: 10.11999/JEIT180094
Zhenya LI, Xiaosong ZHU, Jianhua ZHANG. A Novel Broadband Circularly Polarized Monopole Antenna[J]. Journal of Electronics & Information Technology, 2018, 40(11): 2705-2711. doi: 10.11999/JEIT180094
Citation: Zhenya LI, Xiaosong ZHU, Jianhua ZHANG. A Novel Broadband Circularly Polarized Monopole Antenna[J]. Journal of Electronics & Information Technology, 2018, 40(11): 2705-2711. doi: 10.11999/JEIT180094

一种新颖的宽带圆极化单极天线

doi: 10.11999/JEIT180094
基金项目: 国家自然科学基金(61671454)
详细信息
    作者简介:

    李振亚:男,1989年生,博士生,研究方向为宽带微带天线、共形微带天线的理论分析与仿真计算

    竺小松:男,1963年生,研究员,博士生导师,研究方向为嵌入式智能信号处理、智能蒙皮技术

    张建华:女,1962年生,教授,研究方向为电磁场理论与天线技术

    通讯作者:

    李振亚  lizhenya7189@126.com

  • 中图分类号: TN821

A Novel Broadband Circularly Polarized Monopole Antenna

Funds: The National Natural Science Foundation of China (61671454)
  • 摘要: 该文设计了一种新颖的宽带圆极化单极子天线,该天线采用微带馈电模式。天线由C型贴片和改进的地板组成,整个天线尺寸仅为25×25×1 mm3。通过在C型贴片上切角和在地板上增加三角形微扰结构,可以有效增加天线的阻抗带宽和轴比带宽。该文给出了天线的设计流程,从表面电流分布分析了圆极化天线的工作机理。加工了天线实物,并对其进行了测量。仿真和实测结果表明天线具有超宽的阻抗带宽和轴比带宽。天线的工作频带为4.35~12 GHz(相对带宽为93.6%),3 dB轴比带宽为4.15~11.8 GHz(相对带宽为95.9%)。测量了天线的辐射性能和增益特性,实测结果与仿真结果吻合较好,证明了该天线的有效性。该天线可以应用于超宽带无线通信系统和卫星通信系统中。
  • 图  1  天线结构图

    图  2  天线设计流程图

    图  3  4种不同天线对应的反射系数和轴比

    图  5  反射系数和轴比随切角深度的变化曲线

    图  4  反射系数和轴比随三角形边长的变化曲线

    图  6  7 GHz天线表面电流分布图

    图  7  天线实物图

    图  8  天线实测和仿真对比图

    图  10  天线增益曲线

    图  9  天线归一化辐射方向图

    表  1  优化后的天线单元尺寸(mm)

    L L1 L2 L3 L4 L5 L6
    25.0 6.0 2.5 2.6 2.86 5.45 5.0
    W W1 Wf R R1 d
    25.0 9.0 3.0 9.0 6.0 1.2
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-01-23
  • 修回日期:  2018-07-13
  • 网络出版日期:  2018-07-27
  • 刊出日期:  2018-11-01

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