Methods and apparatus for envelope tracking system

A communication unit comprises a radio frequency, RF, transmitter comprising: a power amplifier, PA, module; an envelope tracking system operably coupled to the PA module and arranged to variably control a supply voltage for the PA module; and a load control system operably coupled to an output of t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Liang Paul Cheng Po, Yan Sheng-Hong, Peng Chia-Sheng, Liu Wei-Cheng
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A communication unit comprises a radio frequency, RF, transmitter comprising: a power amplifier, PA, module; an envelope tracking system operably coupled to the PA module and arranged to variably control a supply voltage for the PA module; and a load control system operably coupled to an output of the PA module and arranged to control a power amplifier output load.