发明授权
- 专利标题: Electronics parts for high frequency power amplifier
- 专利标题(中): 电子部件用于高频功率放大器
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申请号: US12071203申请日: 2008-02-19
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公开(公告)号: US07595694B2公开(公告)日: 2009-09-29
- 发明人: Kyoichi Takahashi , Takayuki Tsutsui , Hitoshi Akamine , Fuminori Morisawa , Nobuhiro Matsudaira
- 申请人: Kyoichi Takahashi , Takayuki Tsutsui , Hitoshi Akamine , Fuminori Morisawa , Nobuhiro Matsudaira
- 申请人地址: JP Tokyo
- 专利权人: Renesas Technology Corp.
- 当前专利权人: Renesas Technology Corp.
- 当前专利权人地址: JP Tokyo
- 代理机构: Mattingly & Malur, P.C.
- 优先权: JP2005-052290 20050228
- 主分类号: H03G3/30
- IPC分类号: H03G3/30
摘要:
This invention provides an electronic part for high frequency power amplification (RF power module) which will automatically perform the precharge level setting for proper output power at start of transmission without requiring the software process for precharging to run on the baseband IC, which can reduce the burden on users, namely, mobile phone manufacturers. Such electronic part configured to amplify RF transmit signals includes an output power control circuit which supplies an output power control voltage to a bias control circuit in a high frequency power amplifier circuit, based on an output power level directive signal. This electronic part is equipped with a precharge circuit which raises the output power control voltage to produce a predetermined level of output power, while detecting a current flowing through a final-stage power amplifying element, triggered by rise of a supply voltage at start of transmission.
公开/授权文献
- US20080150637A1 Electronics parts for high frequency power amplifier 公开/授权日:2008-06-26