发明授权
US07339435B2 Amplifier and device having amplifier, and mutual conductance control method
失效
放大器和具有放大器的器件，以及互导控制方法
- 专利标题： Amplifier and device having amplifier, and mutual conductance control method
- 专利标题（中）： 放大器和具有放大器的器件，以及互导控制方法
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申请号： US11285111申请日： 2005-11-23
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公开(公告)号： US07339435B2公开(公告)日： 2008-03-04
- 发明人: Shinji Saito
- 申请人： Shinji Saito
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Arent Fox LLP
- 优先权： JP2005-256586 20050905
- 主分类号： H03G3/30
- IPC分类号： H03G3/30
摘要：
An amplifier is provided with an amplifier circuit including a plurality of first transistors having gates thereof coupled in common, a bias circuit including a plurality of second transistors that are coupled and outputs a bias voltage to the gates of the plurality of first transistors, and a selection circuit simultaneously controlling a number of first transistors to be coupled to the amplifier circuit and a number of second transistors to be coupled to the bias circuit based on the bias voltage.