Circuits and methods for power amplification with extended high efficiency

A method comprising:

• generating an output voltage in a power amplifier, the power amplifier comprising a main amplifier stage and a peaking amplifier stage, wherein an output of the peaking amplifier stage is coupled to an output of the main amplifier stage through an impedance inverter circuit, wherein the output of the peaking amplifier stage is coupled to an output terminal of the power amplifier, wherein the main amplifier stage comprises a first power supply terminal and the peaking amplifier stage comprises a second power supply terminal;
• generating one or more dynamic supply voltages in a power supply circuit, wherein the one or more dynamic supply voltages are coupled to the first power supply terminal of the main amplifier stage and the second power supply terminal of the peaking amplifier stage,
• wherein the power supply circuit adjusts the one or more dynamic supply voltages so that a difference between at least one of the one or more dynamic supply voltages and the power amplifier output voltage is maintained within a predetermined range.