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Wideband and compact rat‐race coupler for fifth‐generation N77/N78/N79 applications
Author(s) -
Zhou Bo,
Zhang Ziyang,
Li Changkun,
Qian Li,
Wang Yunheng
Publication year - 2020
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.32433
Subject(s) - wideband , miniaturization , microstrip , rat race coupler , bandwidth (computing) , electrical engineering , hybrid coupler , power dividers and directional couplers , broadside , electronic engineering , topology (electrical circuits) , engineering , physics , telecommunications , optics
A wideband and compact rat‐race coupler that covers 3 to 5 GHz is proposed for the fifth‐generation new radio N77/N78/N79 applications. The wideband characteristic is obtained by using cascaded two‐section topology and broadside‐coupled lines at each input/output port. Miniaturization of two‐section rings is achieved using meander microstrip lines. A fractional bandwidth of 50% and a size reduction of 60% are both reached. Good in‐phase and out‐of‐phase characteristics are obtained as well. The circuit can be easily fabricated using conventional printed circuit board process and suitable for mass production.