Invention Grant
- Patent Title: High frequency power amplifier, transmitter and mobile communication terminal using the power amplifier
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Application No.: US11430172Application Date: 2006-05-09
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Publication No.: US08229373B2Publication Date: 2012-07-24
- Inventor: Tomonori Tanoue , Hidetoshi Matsumoto
- Applicant: Tomonori Tanoue , Hidetoshi Matsumoto
- Applicant Address: JP Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kanagawa
- Agency: Stites & Harbison, PLLC
- Agent Juan Carlos A. Marquez Esq
- Priority: JP2005-138142 20050511
- Main IPC: H01Q11/12
- IPC: H01Q11/12
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.
Public/Granted literature
- US20060267688A1 High frequency power amplifier, transmitter and mobile communication terminal using the power amplifier Public/Granted day:2006-11-30
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