Power module for envelope tracking

摘要

A power module for envelope tracking includes a linear amplifier and a DC-to-DC (Direct Current to Direct Current) converter. The linear amplifier has a positive input terminal for receiving a first control signal, a negative input terminal, and an output terminal for outputting a first adaptive supply voltage, wherein the output terminal is fed back to the negative input terminal. The DC-to-DC converter receives a second control signal, and supplies a second adaptive supply voltage to the linear amplifier according to the second control signal. The first control signal is related to the second control signal.

主权项

1. A power module for supplying an adaptive supply voltage to a power amplifier generating an RF (Radio Frequency) signal, comprising:
a linear amplifier, for supplying a first adaptive supply voltage to the power amplifier; a DC-to-DC (Direct Current to Direct Current) converter, for supplying a second adaptive supply voltage to the linear amplifier; and a mapping circuit, for controlling the linear amplifier and the DC-to-DC converter according to a baseband signal.