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A design of compact wideband negative group delay network using cross coupling
Author(s) -
Chaudhary Girdhari,
Jeong Yongchae
Publication year - 2014
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.28627
Subject(s) - wideband , resistor , group delay and phase delay , bandwidth (computing) , center frequency , microwave , electronic engineering , coupling (piping) , electrical engineering , physics , engineering , telecommunications , band pass filter , mechanical engineering , voltage
This article presents a novel approach to the design of a compact wideband negative group delay (NGD) network using cross coupling between open stubs. The NGD time can be controlled by external series resistors, whereas the NGD bandwidth can be controlled by the coupling coefficient between open stubs. To verify the design concept, the NGD network operating at center frequency of 1.96 GHz was designed and fabricated. From the measurement results, a maximum achievable NGD time of −1.1 ± 0.2 ns was obtained over a 410 MHz BW with a maximum signal attenuation of 29.23 dB. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2495–2497, 2014