Patent ID: 6956438

Claim:
A radio frequency power amplifier module comprising: a first transistor to amplify a signal inputted through an input or inter-stage impedance matching circuit, and output a first amplified signal; a second transistor to amplify the first amplified signal inputted through an output terminal of said first transistor, and output a second amplified signal; a third transistor to drive the first transistor; a first terminal to supply a driving voltage to an output terminal of said second transistor; a first interconnection to couple said first terminal and the output terminal of said second transistor; a second terminal to supply current and voltage to an input terminal of said third transistor; a second inter connection to couple said second terminal and the input terminal of said third transistor; and a third interconnection provided between said first and second interconnections, the voltage of said third interconnection being different from the voltage of said first interconnection, and the voltage of said third interconnection being different from the voltage of said second interconnection.