Power supply pre-distortion

摘要

There is disclosed a method of generating a supply voltage (230) for a power amplifier (114) arranged to amplify an input signal (228), comprising: generating (104) a target supply voltage tracking the input signal (228); predistorting (400) the target supply voltage to compensate for effects on a supply voltage in the amplifier (114); and generating (102) the supply voltage for the amplifier (114) in dependence on the predistorted target supply voltage (414).

主权项

1. A method of generating a supply voltage for a power amplifier arranged to amplify an input signal, comprising:
generating a target supply voltage tracking the input signal; pre-distorting the target supply voltage to compensate for the effects applied to the supply voltage between an input terminal of the amplifier and a node of an active element of the amplifier to which the modulated supply voltage is applied; and generating the supply voltage for the amplifier in dependence on the pre-distorted target supply voltage.