Engineered group delay transmission lines based on novel negative group delay networks

2017 ◽  
Author(s):  
T. Thatapudi ◽  
P. Gardner ◽  
A. Feresidis
Keyword(s):  
Transmission Lines ◽  
Group Delay ◽  
Negative Group ◽  
Negative Group Delay

scholarly journals Negative Group Delay Circuit Based on Microwave Recursive Filters

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Mohammad Ashraf Ali ◽  
Chung-Tse Michael Wu
Keyword(s):  
Transmission Lines ◽  
Group Delay ◽  
Characteristic Impedance ◽  
Negative Group ◽  
Recursive Filters ◽  
Novel Approach ◽  
Quarter Wavelength ◽  
Quarter Wave ◽  
The Given ◽  
Negative Group Delay

This work presents a novel approach to design a maximally flat negative group delay (NGD) circuit based on microwave recursive filters. The proposed NGD circuit is realized by cascading N stages of quarter-wavelength stepped-impedance transformer. It is shown that the given circuit can be designed to have any prescribed group delay by changing the characteristic impedance of the quarter-wave transformers (QWTs) cascaded with each other. The proposed approach provides a systematic method to synthesize NGD of arbitrary amount without including any discrete lumped component. For various prescribed NGD, the characteristic impedance of QWT has been tabulated for two and three stages of the circuit. The widths and lengths of microstrip transmission lines can be obtained from characteristic impedance and the frequency of operation of the transmission line. The results are verified in both simulation and measurement, showing a good agreement.

Electromagnetic Cavity Resonance Equalization With Bandpass Negative Group Delay

2021 ◽  
pp. 1-10
Author(s):  
Blaise Ravelo ◽  
Sebastien Lallechere ◽  
Wenceslas Rahajandraibe ◽  
Fayu Wan
Keyword(s):  
Group Delay ◽  
Cavity Resonance ◽  
Negative Group ◽  
Negative Group Delay

scholarly journals Negative Group Delay Theory on Li Topology

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 47596-47606
Author(s):  
Blaise Ravelo ◽  
Lili Wu ◽  
Fayu Wan ◽  
Wenceslas Rahajandraibe ◽  
Nour Mohammad Murad
Keyword(s):  
Group Delay ◽  
Negative Group ◽  
Negative Group Delay

scholarly journals Design of resonant mirrors with negative group delay

2014 ◽  
Vol 22 (23) ◽  
pp. 29213 ◽  
Author(s):  
Antonio Gellineau ◽  
Yu-Po Wong ◽  
Olav Solgaard
Keyword(s):  
Group Delay ◽  
Negative Group ◽  
Negative Group Delay
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