Method and Its Optimization for Group Delay Measurement of Frequency-Translating Devices by Using Double-Frequency Phase Difference Method

摘要：

Group delay is a key parameter describing the phase characteristic of the signal transmission system, which can also measure the phase linearity of the continuous signal passing through transmission system. The group delay of Frequency-Translating Devices (FTD) is measured by the double-frequency phase difference method in this paper. But the measurement error will increase in the FTD whose group delay changes greatly. In view of this problem, an optimization method is put forward. Combined with polynomial fitting of high order, this proposed method, which uses the reasonable selection of the parameters such as measuring aperture and measurement interval, can improve the measurement precision and the test efficiency.

关键词： FTD group delay double-frequency phase difference method.

作者: Yu Changjun Lin Jie

作者单位: Research Institute of Electronic Engineering,Harbin Institute of Technology,Weihai 264209,China

会议类型: 国际会议

会议名称: 2011 10th International Conference on Electronic Measurement & Instruments(第十届电子测量与仪器国际会议 ICEMI2011)

会议地点: 成都

会议语种:英文

页码: 1163-1167

在线出版日期: 2011-08-16（万方平台首次上网日期，不代表论文的发表时间）