Patent ID: 9461590
Filing Date: 2016-10-04
CPC Classification: H03F

Claim Text:
1. A system for envelope tracking (ET) in connection with single-band or multi-band transmission, comprising: a plurality of power amplification components, wherein each power amplification component of the plurality of power amplification components is associated with a distinct frequency band, wherein each power amplification component of a first subset of the plurality of power amplification components comprises a first power amplifier (PA) configured to transmit in the distinct frequency band and configured to operate according to an ET mode of operation, wherein each power amplification component of a second subset of the plurality of power amplification components comprises a second PA configured to transmit in the distinct frequency band and configured to operate according to an average power tracking (APT) mode of operation; a first DC-to-DC converter configured to provide a first supply voltage according to the ET mode and coupled to each of the first PAs; a second DC-to-DC converter configured to provide a second supply voltage according to the APT mode and coupled to each of the second PAs; and a control component configured to determine a present transmission mode and to select, based at least in part on the present transmission mode, one or more PAs of the plurality of power amplification components.