Group Delay Analysis Approach for Quasi-Reflectionless Power Divider With Flat Phase Difference

2021 ◽  
Author(s):  
Girdhari Chaudhary ◽  
Daehan Lee ◽  
Yongchae Jeong
Keyword(s):  
Phase Difference ◽  
Group Delay ◽  
Power Divider ◽  
Analysis Approach ◽  
Delay Analysis

Phase and group delay analysis for patch antenna

2015 ◽  
Author(s):  
Lixun Li ◽  
Yingxue Su ◽  
Baiyu Li ◽  
Feixue Wang
Keyword(s):  
Patch Antenna ◽  
Group Delay ◽  
Delay Analysis

scholarly journals 0IO-Shape PCB Trace Negative Group-Delay Analysis

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 97707-97717
Author(s):  
Fayu Wan ◽  
Bin Liu ◽  
Preeti Thakur ◽  
Atul Thakur ◽  
Sebastien Lallechere ◽  
...  
Keyword(s):  
Group Delay ◽  
Delay Analysis ◽  
Negative Group ◽  
Negative Group Delay

The Analysis and Correction of Time-Delay in the Precise Acoustic Measurement System

2013 ◽  
Vol 333-335 ◽  
pp. 236-242
Author(s):  
Zhi Gang Huang ◽  
Chun Jie Qiao ◽  
Chao Ma ◽  
Shen Zhao
Keyword(s):  
Time Delay ◽  
Phase Difference ◽  
Measurement System ◽  
Group Delay ◽  
Phase Delay ◽  
Signal Frequency ◽  
Acoustic Measurement ◽  
Signal Phase ◽  
Acoustic Transducer ◽  
Good Consistency

The acoustic transducer is a nonlinear system, which will cause a time delay to signals. The system group and phase delay have a large influence on the results in the transmit-time measurement. In order to solve the problem, this paper proposes to use the signal phase difference to eliminate the phase delay, and precisely determine the group delay by the method of experiment. At first, this paper theoretically proves that the group delay of the acoustic measurement system is constant, and the phase delay changes over signal frequency, then it analyzes the influence of group and phase delay on the measuring results and meanwhile puts forward a method to use the multi-frequency signal phase difference to eliminate group delay .Finally, it achieves the group delay through experiments, and there is a good consistency between the experimental results and theoretical analysis.

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