卫星宽带中频调制解调器测试平台设计  

Design of Wide-band Satellite IF Mod-demodulator Performance Test Platform

作　　者：吕国成[1] 周益 金野[1] 

机构地区：[1]北京大学信息科学技术学院,北京100871 [2]北京卫星导航中心,北京100094

出　　处：《实验室研究与探索》2017年第7期53-55,91,共4页Research and Exploration In Laboratory

摘　　要：为实现宽带卫星中频调制解调器性能的快速验证及性能提升,基于EVM(Error Vector Magnitude)误差矢量分析,结合安捷伦的大型精密仪器(如E4438C信号源、E4440A PSA频谱分析仪、16803A数字逻辑分析仪等),设计了基于EVM检测的卫星宽带中频调制解调器测试平台。通过该平台,能直观、实时分析调制、解调器的EVM值。通过EVM分析,给出中频调制、解调器的优化方向,为宽带调制、解调器的研究提供了有力的支撑,促进了宽带卫星通信系统的科研及教学发展,提高了大型仪器的使用效率。In order to realize the fast measurement and improvement of the wide-band satellite IF mod-demodulator performance. Based on the EVM（ Error Vector Magnitude） analysis,using the Agilent＇s large-scale equipment（ such as E4438 C,E4440A SPA,16803 A digital logic analyzer）,a wide-band satellite IF mod-demodulator test platform based on EVM measurement is designed. The platform provides a way to get the real-time IF mod-demodulator＇s EVM value. Even more,the adjustments for improving the IF mod-demodulator＇s performance is obtained based on the EVM analysis. This platform is greatly helpful for the research on the wide-band IF mod-demodulator and facilitates the satellite communicate research project and education,and improves the service efficiency of the large-scale instruments at the same time.

关 键 词：卫星通信 中频调制解调器 误差矢量 大型仪器 

分 类 号：TN911.6[电子电信—通信与信息系统]