Power amplifiers with broadband matching networks

A method of radio frequency signal amplification in a mobile device, the method comprising:

• generating a radio frequency input signal using a transceiver;
• amplifying the radio frequency input signal to generate a radio frequency output signal using a power amplifier having one or more power amplifier stages formed on a compound semiconductor die;
• providing the radio frequency output signal to a band selection switch formed on a silicon switch die;
• and
• providing a bandwidth adjustment to the power amplify by controlling a first controllable impedance formed on the compound semiconductor die and a second controllable impedance formed on the semiconductor switch die.

A radio frequency multi-chip module comprising:

• a module substrate;
• a compound semiconductor die attached to the module substrate, the compound semiconductor die including a first controllable impedance and a power amplifier that includes one or more power amplifier stages configured to amplify a radio frequency input signal to generate a radio frequency output signal;
• and
• a silicon switch die attached to the module substrate and including a band selection switch configured to receive the radio frequency output signal and a second controllable impedance, the first controllable impedance and the second controllable impedance configured to provide a bandwidth adjustment to the power amplifier.