3D digital predistortion for dual-band envelope tracking power amplifiers
Document typeConference lecture
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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.
CitationGilabert, Pere L., Montoro, G., López, D., García, J. 3D digital predistortion for dual-band envelope tracking power amplifiers. A: Asia-Pacific Microwave Conference. "APMC 2013 Proceedings". 2013, p. 734-736.
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