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一种新型椭圆波束天线设计技术

刘兴隆 杜彪 周建寨

刘兴隆, 杜彪, 周建寨. 一种新型椭圆波束天线设计技术[J]. 电子与信息学报, 2019, 41(12): 2911-2918. doi: 10.11999/JEIT190142
引用本文: 刘兴隆, 杜彪, 周建寨. 一种新型椭圆波束天线设计技术[J]. 电子与信息学报, 2019, 41(12): 2911-2918. doi: 10.11999/JEIT190142
Xinglong LIU, Biao DU, Jianzhai ZHOU. A Novel Shaping Design Technique of the Elliptical Beam Antenna[J]. Journal of Electronics & Information Technology, 2019, 41(12): 2911-2918. doi: 10.11999/JEIT190142
Citation: Xinglong LIU, Biao DU, Jianzhai ZHOU. A Novel Shaping Design Technique of the Elliptical Beam Antenna[J]. Journal of Electronics & Information Technology, 2019, 41(12): 2911-2918. doi: 10.11999/JEIT190142

一种新型椭圆波束天线设计技术

doi: 10.11999/JEIT190142
详细信息
    作者简介:

    刘兴隆:男,1986年生,博士生,工程师,研究方向为反射面天线与馈源技术

    杜彪:男,1962年生,研究员,博士生导师,研究方向为反射面天线、馈源、阵列天线和超材料天线的研究与设计

    周建寨:男,1975年生,高级工程师,研究方向为卫星通信天线与馈源技术

    通讯作者:

    刘兴隆 xinglongxidian@163.com

  • 中图分类号: TN820

A Novel Shaping Design Technique of the Elliptical Beam Antenna

  • 摘要: 针对双频段低剖面椭圆波束天线的需求,该文提出了一种新型混合结构椭圆波束天线的设计技术。该混合结构由主、副反射面内环部分构成的椭圆波束环焦天线和外环部分构成的椭圆波束卡塞格伦天线组成。该文描述了椭圆波束天线的设计思路、设计步骤和赋形计算公式,给出一个600 mm×1200 mm椭圆波束天线的设计实例,并进行了容差分析,该天线的工作频率覆盖了Ku/Ka双频段,效率达到56%以上,电压驻波比(VSWR)低于1.27,俯仰面第1旁瓣低于–12.2 dB,方位面第1旁瓣低于–14.6 dB。商业软件Grasp和CST全波仿真的结果吻合很好,证明了该新颖结构和设计方法的有效性。
  • 图  1  混合结构椭圆波束天线的示意图

    图  2  $\varphi = 0^\circ $面主副反射面赋形曲线示意图

    图  3  选取的口面场能量分布曲线

    图  4  长短轴平面上主副反射面曲线和馈源剖面图

    图  5  主副反射面的俯视图

    图  6  主副反射面Grasp仿真模型和光路图

    图  7  Grasp仿真的天线辐射方向图

    图  8  CST全波仿真模型

    图  9  全波仿真天线辐射方向图

    图  10  驻波曲线

    图  11  31 GHz的最坏解集

    图  12  考虑公差后天线方向图与原模型比较

    图  13  考虑公差后驻波曲线与原模型比较

    表  1  Grasp仿真的天线辐射性能

    频率(GHz)11.4512.7514.0014.5017.7021.2029.4031.00
    增益(dBi)38.5039.4040.2040.5142.4044.0146.7247.17
    俯仰面旁瓣(dB)–15.27–14.95–14.86–14.84–15.54–15.41–15.08–15.03
    45°面旁瓣(dB)–21.28–21.13–21.12–21.06–20.42–19.59–20.10–19.65
    方位面旁瓣(dB)–18.60–19.08–19.33–19.45–19.15–18.87–17.26–17.00
    口径效率(%)60.7560.3660.1060.1662.3963.1161.1661.00
    下载: 导出CSV

    表  2  CST全波仿真的天线辐射性能

    频率(GHz)11.4512.7514.0014.5017.7021.2029.4031.00
    增益(dBi)38.6239.3940.1540.4942.0843.8346.5047.10
    俯仰面旁瓣(dB)–13.15–12.51–13.83–13.36–12.79–14.40–17.24–15.92
    45°面旁瓣(dB)–16.24–17.79–17.13–16.83–18.05–19.43–19.15–19.70
    方位面旁瓣(dB)–15.00–17.45–15.61–15.42–16.96–18.97–19.00–18.53
    口径效率(%)62.5060.1859.4659.9458.0160.5058.1860.08
    下载: 导出CSV

    表  3  考虑公差后的天线辐射性能

    频率(GHz)11.4512.7514.0014.5017.7021.2029.4031.00
    增益(dBi)38.5839.2939.9740.4642.0543.8146.3746.87
    俯仰面旁瓣(dB)–12.92–12.36–13.71–13.23–12.21–15.20–16.61–15.42
    45°面旁瓣(dB)–16.55–16.71–17.00–16.06–17.15–18.53–19.12–18.80
    方位面旁瓣(dB)–15.13–16.03–15.61–14.67–16.67–16.91–15.88–17.01
    口径效率(%)61.9258.8157.0459.5357.6160.2356.4656.98
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-03-11
  • 修回日期:  2019-08-09
  • 网络出版日期:  2019-08-29
  • 刊出日期:  2019-12-01

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