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Modified Doherty combiner with adjustable phase deviation
Author(s) -
Lee Daeung,
Kim Sungmin,
Jang Youna,
Koo Seo,
Kim Inseon,
Lim Jongsik,
Cho Jeongho,
Ahn Dal
Publication year - 2018
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.31461
Subject(s) - amplifier , bandwidth (computing) , electronic engineering , transmission line , electric power transmission , engineering , electrical engineering , computer science , telecommunications
In this paper, we propose a newly enhanced Doherty combiner by adding a 180° transmission line to the stage of the peaking amplifier of a typical Doherty combiner such that the designer can easily construct a combiner having a phase deviation to be turned on within the intended bandwidth. Given such characteristics, the proposed structure provides wider phase bandwidth and better performance with respect to power combining rate than the conventional structure does. We introduce formulas for the design variables of the added transmission line and also demonstrate its validity through circuit design and experiment.