基于频谱仪和矢网的混频器变频损耗测量技术

在各种可靠性试验后，混频器的变频损耗参数是衡量器件性能的一个重要指标，在基于频谱仪法和矢量网络分析仪法两种测试变频损耗方法的基础上，分析了变频损耗三种误差的主要来源，通过两种测试方法的实测数据分析了这三种误差对两种测试方法的影响和相应的误差消除技术，得出了结论：频谱仪法仪器成本低，操作简单，误差来源多且测试不稳定，矢量网络分析仪法测试稳定，可靠性高，在整个测试频段内测试数据稳定精确。

Freguency conversion loss measuring technology of mixer frequency meter based on spectrum instrument and vector network

After various reliability tests, the parameters of the mixer conversion loss is an important indicator of device performance. Based on the two fregueney conversion loss measuring method,which are spectrum analyzer method and vector network analyzer method,this paper analyzed the three main sources of the error of fregueney conrersion loss. Through the measured data of the two tests methods,the influence of the three kinds of error to the two methods and the corresponding error elimination technigue are analyzed,and the results show that the spectrum analyzer method has the characteristic of low instrument cost,simple operation,but more sources of error and less test stability,while the vector network analyzer method has the advantages of high stability and reliability,stable and accurate test data throughout the entire test band.