Study and minimization of the Out-phasing amplifiers nonlinearity

Author

Boumaiza, Slim ; Ghannouchi, Fadhel M.

Author_Institution

Dept. of Electr. & Comput., Calgary Univ., Alta.

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

188

Lastpage

191

Abstract

This paper deals with the minimization of source of nonlinearity in out-phasing amplifiers, which was widely reported in previous publications. The load modulation, produced by the lossless combiner, leads to a high sensitivity to the reactive part of the two transistors´ output impedance attributed to the extrinsic parasitics. These parasitics introduce an unbalance between the two branches and contribute to the nonlinear behavior. The minimization of such parasitics allowed a significant improvement in the linearity of the amplifier

Keywords

minimisation; nonlinear network analysis; power amplifiers; radiofrequency amplifiers; extrinsic parasitics; load modulation; lossless combiner; nonlinear behavior; nonlinearity minimisation; out-phasing amplifiers; power amplifier; power efficiency; transistor parasitics; High power amplifiers; Impedance; Laboratories; Linearity; Microwave amplifiers; Power amplifiers; Power generation; Radio frequency; Radiofrequency amplifiers; Topology; linearity; out-phasing power amplifier; power efficiency; transistor parasitics;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281250

Filename

4057779