发明授权
- 专利标题： Transmission circuit with improved gain control loop
- 专利标题（中）： 传输电路具有改进的增益控制回路
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申请号： US341186申请日： 1994-11-18
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公开(公告)号： US5659893A公开(公告)日： 1997-08-19
- 发明人: Takashi Enoki , Masaharu Nakatsuchi , Kohji Chiba , Fujio Sasaki
- 申请人： Takashi Enoki , Masaharu Nakatsuchi , Kohji Chiba , Fujio Sasaki
- 申请人地址： JPX Yokohama JPX Tokyo
- 专利权人： Matsushita Communication Industrial Co., Ltd.,NIT Mobile Communications Network, Inc.
- 当前专利权人： Matsushita Communication Industrial Co., Ltd.,NIT Mobile Communications Network, Inc.
- 当前专利权人地址： JPX Yokohama JPX Tokyo
- 优先权： JPX5-290166 19931119; JPX5-290167 19931119
- 主分类号： H03G3/30
- IPC分类号： H03G3/30 ; H04B1/04
摘要：
In a transmission circuit, part of the output signal of the transmission circuit is diverted by an output monitor circuit and subjected to envelope detection by an output detector circuit. The output signal of the output detector circuit is inputted to a peak hold circuit successively holding the peaks of the input signal, so that varying amplitude components are removed, and a DC value is detected. An error detector circuit compares the detected value with a reference signal from a reference signal generator circuit, and the error signal is used as a gain control signal to control the gain of a power amplifier circuit.
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