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Arbitrary terminated negative group delay circuit using signal interference concept
Author(s) -
Chaudhary Girdhari,
Jeong Yongchae
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22341
Subject(s) - group delay and phase delay , wideband , bandwidth (computing) , center frequency , electronic engineering , electrical engineering , interference (communication) , physics , computer science , telecommunications , engineering , band pass filter , channel (broadcasting)
In this article, we demonstrate signal interference concept based wideband negative group delay (NGD) circuit with an arbitrary termination port impedance. The proposed circuit consists of unequal power division ratio 180° hybrid and in‐phase combiner. The NGD can be generated by controlling power division ratios of 180° hybrid and combiner. For experimental verification, the circuit is designed and fabricated at a center frequency of 2 GHz. The experiment results show that the proposed NGD circuit can provide 460 MHz NGD bandwidth (bandwidth of group delay <0 ns) with group delay of −0.8 ns at 2 GHz.