矢量信号分析的溯源  

Traceability of RF vector signal analyzer

作　　者：杨振龙 Yang Zhenlong(Suzhou Institute of Metrology,Suzhou 215128,China)

机构地区：[1]苏州市计量测试研究院,苏州215128

出　　处：《国外电子测量技术》2020年第7期43-46,共4页Foreign Electronic Measurement Technology

摘　　要：现代数字调制信号发生器的矢量调制性能计量是一个难题,该指标不是一个物理量,因此无法通过传统的方法计量和溯源,通常采用矢量信号分析仪的调制分析功能进行计量。但是矢量信号分析仪自身的不理想因素、残余误差,及其不确定度如何计算,也是一个问题。分析了矢量信号分析的误差的来源,以及基本的均衡和修正方法,重点介绍光电采样系统(EOS)的原理和溯源方法,通过实验手段进行验证和测试,并对不确定度进行了初步分析,对矢量信号发生器等设备的计量提供参考标准。Performance of digital modulator in modern vector signal generator is an important figure of merit,however the tractability of this parameter is no explicit.The vector signal generator is usually measured by vector signal analyzer,so the error terms in the vector signal analyzer is the key influence factor.The error sources of vector signal analyzer is discussed in this paper,the corresponding equalization and correction are presented.Electro-optical sampling system provides traceable source for the characterization of analog to digital converter,and it is a good solution of vector signal analyzer self-alignment.

关 键 词：矢量信号分析仪 光电采样(EOS) 相位响应的均衡 

分 类 号：TN98[电子电信—信息与通信工程]