Elimination of Systematic Error in the Measurement of Group Delay of Frequency Convertor

被引：1
|
作者：
Wang Jianwu [1 ,2 ]
Feng Zhenghe [1 ]
Wang Jianwu [1 ,2 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
[2] Air Fore Air Born Acad, Dept 2, Guilin 541003, Peoples R China
来源：
2015 FIFTH INTERNATIONAL CONFERENCE ON INSTRUMENTATION AND MEASUREMENT, COMPUTER, COMMUNICATION AND CONTROL (IMCCC) | 2015年
关键词：
group delay; measurement; I/Q processing; two-tone method;
D O I：
10.1109/IMCCC.2015.383
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The influence of spectral leakage is analyzed theoretically when the two-tone method and the all-phase discrete Fourier transformation (apDFT) are utilized to measure the group delay of a frequency convertor. Owing to the spectral leakage, the spectral lines of the two tones interact, and the interaction arouses errors in the measurement of group delay. Then, an I/Q method is put forward to eliminate the interaction. Simulations with a frequency convertor demonstrate the feasibility of the I/Q method in eliminating the interaction.
引用
收藏
页码：1803 / 1806
页数：4
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