3D Digital predistortion for dual-band envelope tracking power amplifiers

Author

Gilabert, Pere L. ; Montoro, Gabriel ; Lopez, D. ; Garcia, J.A.

Author_Institution

Dept. of Signal Theor. & Commun., Univ. Politec. de Catalunya (UPC), Castelldefels, Spain

fYear

2013

fDate

5-8 Nov. 2013

Firstpage

734

Lastpage

736

Abstract

This paper proposes a novel three-dimensional digital predistorter (3D-DPD) suitable for compensating nonlinear distortion in dual-band (DB) envelope tracking (ET) power amplifiers (PAs). By taking into account the cross-band modulation effects (due to DB operation) and the slow-envelope dependent distortion effects (due to ET), the 3D-DPD is design by properly modifying the memory polynomial (MP) behavioral model. In a first approach, the accuracy and reliability of the proposed 3D-MP model are evaluated. Finally, experimental results are shown to validate the linearization performance of the proposed 3D-DPD.

Keywords

linearisation techniques; nonlinear distortion; polynomials; power amplifiers; 3D-DPD; 3D-MP model; DB envelope tracking power amplifiers; MP behavioral model; crossband modulation effects; dual-band ET power amplifiers; memory polynomial behavioral model; nonlinear distortion compensation; slow-envelope dependent distortion effects; three-dimensional digital predistorter; Dual band; Modulation; Nonlinear distortion; Polynomials; Predistortion; Radio frequency; Three-dimensional displays; digital predistortion; dual-band; envelope tracking; power amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2013 Asia-Pacific

Conference_Location

Seoul

Type

conf

DOI

10.1109/APMC.2013.6694913

Filename

6694913