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A dual‐band branch line coupler based on Pi‐shaped coupled lines
Author(s) -
Katakam Sri,
Ren Han,
Shao Jin,
Zhou Mi,
Arigong Bayaner,
Ding Jun,
Zhang Hualiang
Publication year - 2015
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.28879
Subject(s) - multi band device , hybrid coupler , microwave , rat race coupler , electric power transmission , line (geometry) , transmission line , dual (grammatical number) , physics , electrical engineering , phase (matter) , engineering , power dividers and directional couplers , optics , telecommunications , mathematics , geometry , literature , quantum mechanics , antenna (radio) , art
This article presents a coupler using Pi‐shaped coupled lines for dual‐band operations. In this design, two open circuited stubs are tapped at both ends of a coupled line structure to realize the 90° phase changes at two frequencies. The designed structure is used in place of a conventional quarter wavelength transmission line for dual‐band application. For verification, a 3‐dB branch line coupler with operating frequencies of 0.95 and 1.52 GHz is designed. The simulated and measured results are in good agreement with each other. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:501–504, 2015
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