US 12,191,814 B2 · Multi-mode power amplifier apparatus

Abstract

An envelope tracking (ET) power amplifier apparatus is provided. The multi-mode power amplifier apparatus includes a pair of power amplifiers configured to amplify a radio frequency (RF) signal(s) and an output circuit that outputs the amplified RF signal(s) to a signal output(s). In examples disclosed herein, a control circuit can cause the multi-mode power amplifier apparatus to operate in different power management modes by changing a load impedance coupled to the signal output(s). In a non-limiting example, the control circuit can change a power management mode of the multi-mode power amplifier apparatus based on modulation bandwidth of the RF signal(s). As a result, the multi-mode power amplifier apparatus can operate across a wide range of modulation bandwidth without compromising efficiency and performance.

Claims20

Dependent claims

A multi-mode power amplifier apparatus comprising:

a first power amplifier configured to amplify a first composite signal comprising at least one radio frequency (RF) signal;
a second power amplifier configured to amplify a second composite signal comprising the at least one RF signal;
an output circuit configured to regenerate the at least one RF signal from the first composite signal and the second composite signal;
a first signal output and a second signal output configured to output the at least one RF signal;
and
a control circuit configured to change a load impedance at one or more of the first signal output and the second signal output based on a modulation bandwidth of the RF signal to thereby cause the multi-mode power amplifier apparatus to operate in one of an envelope tracking (ET) mode and a hybrid mode.

3 more elements

Dependencies are inferred from the claim text.

Multi-mode power amplifier apparatus

Life of this patent

Multi-mode power amplifier apparatus

Life of this patent

Abstract

Claims20