一种多端口矢量网络分析仪误差校准简化方法  

Simplified error calibration method for multiport vector network analyzer

作　　者：刘军[1] 

机构地区：[1]中国电子科技集团公司第四十一研究所,青岛266555

出　　处：《国外电子测量技术》2016年第9期29-33,共5页Foreign Electronic Measurement Technology

摘　　要：本文提出了一种2n通道n端口矢量网络分析仪(VNA)误差模型和校准方法,在4n项误差模型的基础上根据矢量网络分析仪的实际硬件结构,引入了串话误差和开关误差,从而构造了更加符合实际情况的误差模型。本文给出了新引入误差项的校准方法和修正过程,最终推导出了矩阵形式的散射参数表达式及测量结果的修正公式。对一个四端口待测器件的散射参数(S参数)进行了实际测量,利用本文方法对原始数据进行校正,其结果与商用VNA进行对比,证明了本文方法的正确性。Based on the traditional 4n-term model,an improved error model,which takes isolation and switch errors into account,according to actual composition of the hardware,is obtained and a method of error terms calibration is presented for multiport vector network analyzer（VNA）.Then a measurement result correction algorithm is derived with the n-port scattering parameters of DUT are expressed in form of matrix.Finally,a four-port actual device are measured in practice and the raw data is corrected with this algorithm.The final results are in good agreement with that of commercial VNA.

关 键 词：矢量网络分析仪 多端口 误差模型 校准 误差修正 

分 类 号：TN98[电子电信—信息与通信工程]