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基于等效电容法单极子天线校准器的研究

刘冠君 陈益胜 常志方

刘冠君,陈益胜,常志方. 基于等效电容法单极子天线校准器的研究[J]. 计量科学与技术,待出版. doi: 10.12338/j.issn.2096-9015.2024.0101
引用本文: 刘冠君,陈益胜,常志方. 基于等效电容法单极子天线校准器的研究[J]. 计量科学与技术,待出版. doi: 10.12338/j.issn.2096-9015.2024.0101
LIU Guanjun, CHEN Yisheng, CHANG Zhifang. Research of a Monopole Antenna Calibrator Based on Equivalent Capacitance Method[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2024.0101
Citation: LIU Guanjun, CHEN Yisheng, CHANG Zhifang. Research of a Monopole Antenna Calibrator Based on Equivalent Capacitance Method[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2024.0101

基于等效电容法单极子天线校准器的研究

doi: 10.12338/j.issn.2096-9015.2024.0101
基金项目: 广东省市场监督管理局科技计划项目(2023CJ03)。
详细信息
    作者简介:

    刘冠君(1994-),广东省计量科学研究院工程师,研究方向:无线电计量,邮箱:lgj_hit@126.com

Research of a Monopole Antenna Calibrator Based on Equivalent Capacitance Method

  • 摘要: 等效电容法是CISPR 16-1-6中给出的单极子天线的主要校准方法,其原理是使用一个等效电容模拟实际的单极子天线振子,进行相应天线系数的校准,该等效电容的电容量与单极子天线自身容量相等。基于等效电容法的工作原理,设计了一款低成本、小型化、高通用性的天线校准器。仿真和实验结果表明,该校准器可以很好适用于9 kHz~30 MHz单极子天线的校准工作。给出了使用该校准器的测量不确定度的评定过程和评定结果,结果表明,采用该装置校准单极子天线的天线系数,测量结果的扩展不确定度约为1.7 dB(k=2)。
  • 图  1  等效电容法原理图

    Figure  1.  Schematic diagram of ECSM method

    图  2  T型网络结构图

    Figure  2.  Schematic diagram of T-connector

    图  3  T型功分器示意图

    Figure  3.  Schematic diagram of T-type power divider

    图  4  T型功分器实物图

    Figure  4.  Actual diagram of T-type power divider

    图  5  Port A端口驻波比仿真和实测结果

    Figure  5.  Simulation and measured results of VSWR of Port A

    图  7  载入等效电容CE的微带传输线模型

    Figure  7.  Model of a microstrip transmission line loaded with CE

    图  8  级联仿真模型示意图

    Figure  8.  Schematic of cascading simulation model

    图  6  T型功分器分压系数仿真和实测结果

    Figure  6.  Simulation and measured results of voltage division coefficient of T-type power divider

    图  9  载入等效电容CE的分压系数仿真结果

    Figure  9.  Simulation results of the voltage division loaded with CE

    图  10  单极子天线校准器实物图

    Figure  10.  Physical image of monopole antenna calibrator

    图  11  等效电容法测量单极子天线现场实物图

    Figure  11.  The actual picture of the monopole antenna measured by ECSM

    图  12  不同机构实验结果比对

    Figure  12.  Comparison of experimental results from different institutions

    表  1  单极子天线不确定度汇总表

    Table  1.   The summary table of uncertainty of calibrating monopole antenna

    不确定度来源 值/dB 概率分布 包含因子 灵敏系数 ui/dB
    测量$\Delta {S_{21}}$时由网络分析仪引入的${u_{\Delta {S_{21}}}}$ 网络分析仪的非理想性 0.07 正态分布 2 1 0.04
    测量端口失配 0.084 U型分布 $ \sqrt 2 $ 1 0.059
    T型网络非标准引入的${u_{{\text{T - network}}}}$ 0.038 正态分布 $ \sqrt 3 $ 1 0.022
    等效电容CE不准确引入的${u_{{c_{\text{E}}}}}$ 1.31 均匀分布 $ \sqrt 3 $ 1 0.76
    天线放大器增益不稳定引入的${u_{{\text{pg}}}}$ 0.10 正态分布 2 1 0.05
    天线有效高度引入的${u_{{{c}} - h}}$ 0.34 均匀分布 $ \sqrt 3 $ 1 0.19
    S21测量重复性引入的${u_{{\text{repeat}}}}$ 0.3 正态分布 2 1 0.3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2024-03-25
  • 录用日期:  2024-04-10
  • 修回日期:  2024-04-16
  • 网络出版日期:  2024-06-07

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