基于波导传输线的电磁参数测试校准方法  

Measurement and calibration method of electromagnetic parameters based on waveguide transmission line

作　　者：杨志良[1] 江禹 李元浩 姚金杰[1] 孙兴丽 Yang Zhiliang;Jiang Yu;Li Yuanhao;Yao Jinjie;Sun Xingli(Shanxi Provincial Key Laboratory of Information Detection and Processing,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学信息探测与处理山西省重点实验室,太原030051

出　　处：《电子测量技术》2022年第4期179-184,共6页Electronic Measurement Technology

基　　金：山西省青年科学基金(201901D211242)项目资助。

摘　　要：波导传输线电磁参数测试中,测量参考面无法做到被测样片两端,从而会带来较大的测量误差。首先利用传输反射测量法和电磁参数反演算法,通过构建测试仿真模型,得出被测介质材料的磁导率与介电常数表达式。在此基础上,为了解决测量参考面问题,首先使用TRL校准算法,使散射参量S_(11)、S_(21)与理论值偏差下降12%、16%;为了解决嵌入误差问题,使用去嵌入算法,实现散射参量S_(11)与S_(21)的误差分别下降了18%、6%。仿真结果表明两种优化算法均可有效减小测量误差,提高了电磁参数测试精度。In the process of electromagnetic parameters testing with waveguide transmission line,the measurement reference plane can not be at both ends of the material being measured,resulting in a large measurement deviation.The expression of permeability and permittivity of the measured dielectric material is obtained by constructing a test simulation model using transmission reflection measurement method and electromagnetic parameter inversion algorithm.On this basis,in order to solve the measurement reference plane problem,through-reflect-line(TRL)calibration algorithm is being proposed,as a result,TRL calibration algorithm reduce the deviation of scattering parameters S_(11) and S_(21) to 12%and 16%in theory.In order to solve the embedding deviation problem,the de-embedding algorithm is being proposed,and the de-embedding algorithm can reduce the deviation of scattering parameters S_(11) and S_(21) to 18%and 6%respectively.The simulation results show that the two optimization algorithms can effectively reduce the measurement deviation and improve the measurement accuracy of electromagnetic parameters.

关 键 词：传输反射法 电磁参数测量 TRL校准 去嵌入 

分 类 号：TN98[电子电信—信息与通信工程]