基于等效电容法单极子天线校准器的研究  

Research on a Monopole Antenna Calibrator Based on the Equivalent Capacitance Method

作　　者：刘冠君 陈益胜[1] 常志方[1] LIU Guanjun;CHEN Yisheng;CHANG Zhifang(Guangdong Institute of Metrology,Guangzhou 510403,China)

机构地区：[1]广东省计量科学研究院,广州510403

出　　处：《计量科学与技术》2024年第8期10-17,共8页Metrology Science and Technology

基　　金：广东省市场监督管理局科技计划项目(2023CJ03)。

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)。The equivalent capacitance method is the primary calibration approach for monopole antennas outlined in CISPR 16-1-6.This method employs an equivalent capacitor to simulate the actual monopole element for calibrating the corresponding antenna factor,with the capacitance of this equivalent capacitor matching that of the monopole antenna itself.Based on the working principle of the equivalent capacitance method,a low-cost,miniaturized,and highly versatile antenna calibrator has been designed.Simulation and experimental results demonstrate that this calibrator is well-suited for calibrating monopole antennas in the frequency range of 9 kHz to 30 MHz.The evaluation process and results of the measurement uncertainty are presented,showing that when calibrating the antenna factor of monopole antennas using this device,the extended uncertainty of the measurement results is approximately 1.7 dB(k=2).

关 键 词：计量学 T型网络 单极子天线 杆天线 天线系数 天线校准 等效电容法 

分 类 号：TB973[一般工业技术—计量学]