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Title:
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Hybrid envelope amplifier for envelope tracking power amplifier transmitters
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Author:
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Vizarreta Paz, Pedro Pablo; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. CMC - Control, Monitorització i Comunicacions |
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Abstract:
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This paper presents an envelope tracking (ET)
Power Amplifier (PA) whose architecture includes an efficient
Envelope Amplifier (EA) and a bandwidth reduction algorithm
suitable for real time applications. The EA consists of a hybrid
amplifier combining switched and linear amplification. A band-
width and slew-rate reduction algorithm has been incorporated in
order to allow wide-band envelope amplifications. Non-linearities
introduced by the Hybrid EA (HEA) and the dynamic supply are
compensated with Digital Pre-Distortion. The ET PA has been
tested using 64-QAM signals and commercial devices. Results
show that non-linearities produced by the HEA are compens-
able and that the architecture provides efficiency improvements
compared to the conventional linear EA. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència
-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Circuits de microones, radiofreqüència i ones mil·limètriques
-Power amplifiers
-Microwaves
-Amplificadors de potència
-Microones |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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Published by:
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Institute of Electrical and Electronics Engineers (IEEE)
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