Title: High frequency power amplifier, transmitter and mobile communication terminal using the power amplifier
Application Number: 200610074510 Application Date: 2006.04.21
Publication Number: 1862952 Publication Date: 2006.11.15
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03F1/32,H03F3/20,H03G3/20,H04B1/02
Applicant(s) Name: Renesas Tech Corp. Address:
Inventor(s) Name: Tanoue Tomonori
Attorney & Agent: ji xianggang
Abstract:
     A high frequency power amplifier maintains an excellent linearity regardless of a fluctuation of a load impedance and is downsized. The high frequency power amplifier detects an AC voltage amplitude at an output terminal of a final amplification stage transistor, and suppresses an input signal amplitude of a power amplifier when the voltage amplitude exceeds a predetermined threshold value.
Time: 14
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