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Dual‐band in‐/anti‐phase filtering power dividers
Author(s) -
Qin W.,
Chen J.X.,
Zhou L.H.,
Bao Z.H.,
Xue Q.
Publication year - 2016
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.30118
Subject(s) - passband , multi band device , resonator , microwave , power dividers and directional couplers , wilkinson power divider , phase (matter) , group delay and phase delay , power (physics) , electronic engineering , physics , band pass filter , electrical engineering , engineering , filter (signal processing) , frequency divider , acoustics , optics , telecommunications , quantum mechanics , antenna (radio)
This article presents a novel dual‐band in‐/anti‐phase filtering power divider. The signals of the two output ports are symmetrically extracted from the resonator. Naturally, they are in‐phase for even‐mode passband but anti‐phase for the odd‐mode passband. The intrinsic reason is that a negative group delay (NGD) frequency band is presented between the two passbands, which opens a window for the change of the 180º phase differences. For demonstration, a dual‐band filtering power divider is designed and measured based on the stub‐loaded resonators (SLRs). Good agreements are observed between the measured and simulated results, showcasing small magnitude and phase differences in both passbands. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2626–2629, 2016