Optimus Patents US, LLC
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 the PA module and arranged to control a power amplifier output load.
Mediatek Inc.
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Sheng-Hong Chia-Sheng Wei-Cheng Paul Cheng Po
Yan Peng Liu Liang