用相位计测量群时延的方法和技巧  

Methods and Techniques of Group Delay Measurement with Phase Meter

作　　者：尹仲琪[1] 潘柳[1] 沈世科[1] 

机构地区：[1]中国西南电子技术研究所计量检测中心,四川成都610036

出　　处：《宇航计测技术》2009年第1期4-6,共3页Journal of Astronautic Metrology and Measurement

摘　　要：介绍用相位计测量群时延的方法和技巧。通过分析和实验,给出了两种便于操作的测量方法,特别是利用第二种方法的测试技巧,把对时延的测量转换为对频率的测量,提高了测量准确度,使测量过程简便可行。Introduced group delay measurement methods and techniques with phase meter. With analysis and experiment,two measnrement methods convenient for operation are proposed. Especially in the second method, delay measurement is converted into frequency measurement to improve measurement accuracy and make the process simple and feasible.

关 键 词：群时延 相位计 频率 测试方法 

分 类 号：TN965.6[电子电信—信号与信息处理]