High-Resolution Group Delay Measurement and Calculation Method Based on Tikhonov Regularization

被引：0
|
作者：
Luo R. [1 ,2 ]
Liu L. [1 ,2 ]
Tong R. [1 ]
Li L.-Y. [1 ]
机构：
[1] Key laboratory of Terahertz Solid-state Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai
[2] Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2019年 / 47卷 / 05期
关键词：
Difference method; Group delay; Tikhonov regularization;
D O I：
10.3969/j.issn.0372-2112.2019.05.010
中图分类号：
学科分类号：
摘要：
Group delay is a very important indicator when measuring the impact of a transmission network on signal transmission time delay and signal distortion. The calculation of group delay based on the difference method is a commonly used in current measuring instruments, and there is a contradiction between frequency resolution and precision. It will inevitably lead to the decrease of measurement accuracy while improving the frequency resolution. Based on the analysis of the error source of the difference method, this paper presents a novel method of group delay measurement based on the Tikhonov regularization. The comparative analysis shows that the method can obtain the group delay value more precisely with higher frequency resolution when the measurement error is included. In the actual data calculation and verification, the validity of the method verified by comparison to the group delay data obtained by the vector network analyzer. © 2019, Chinese Institute of Electronics. All right reserved.
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页码：1044 / 1048
页数：4
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