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A simple stepped‐impedance transmission line load network for inverse Class F power amplifiers
Author(s) -
Grebennikov Andrei
Publication year - 2011
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.25923
Subject(s) - transmission line , reactance , inductance , electrical impedance , amplifier , inverse , electronic engineering , capacitance , characteristic impedance , engineering , electrical engineering , input impedance , image impedance , electric power transmission , topology (electrical circuits) , mathematics , damping factor , voltage , physics , cmos , geometry , electrode , quantum mechanics
In this article, a novel simple load network with harmonic tuning, which is based on a stepped‐impedance transmission line is presented.Based on effect of a spectrum narrowing when poles of the reactance function are approaching adjacent zeros with higher transmission line impedance ratio, an open circuit at the second harmonic and a short circuit at the third harmonic are achieved, thus satisfying inverse Class F conditions. Design example of the load network with second and third harmonic tuning and effect of the device output shunt capacitance C out and series inductance L out with design equations are described and analyzed. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1157–1160, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25923