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RF curve‐fitting predistorter for extending the dynamic range of a linearized power amplifier
Author(s) -
Cho KyungJoon,
Jang DongHee,
Kim SangHee,
Kim JongHeon,
Stapleton Shawn P.
Publication year - 2003
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.11292
Subject(s) - amplifier , dynamic range , distortion (music) , range (aeronautics) , microwave , power (physics) , rf power amplifier , electronic engineering , engineering , control theory (sociology) , physics , computer science , telecommunications , control (management) , cmos , quantum mechanics , artificial intelligence , aerospace engineering
Abstract In this paper, an RF curve‐fitting predistorter is proposed to extend the linearized dynamic range of a power amplifier. AM‐AM and AM‐PM distortion of the power amplifier can be compensated by accurately adjusting the gain and phase gradients of the three‐reflection‐type diode predistorter. The proposed predistorter extends the linearized dynamic range by more than six times that of a conventional predistorter. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 83–87, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11292