Patent ID: 7139538

Claim:
An electronic component for amplifying high-frequency power, comprising: a first power amplification transistor for amplifying a modulated high-frequency signal in a first frequency band; a second power amplification transistor for amplifying a modulated high frequency signal in a second frequency band; a first transistor for output detection for receiving an input signal of said first power amplification transistor and a first current mirror circuit for passing current proportional to current of the transistor; a second transistor for output detection for receiving an input signal of said second power amplification transistor and a second current mirror circuit for passing current proportional to the current of the transistor; a sense resistor connected commonly on a transfer side of said first current mirror circuit and a transfer side of said second current mirror circuit and converting current to voltage; and a bias control circuit for comparing a signal detected by said sense resistor with an output request level instruction signal and generating a bias current for said first and second power amplification transistors.