- 专利标题： Variable inductor, oscillator including the variable inductor and radio terminal comprising this oscillator, and amplifier including the variable inductor and radio terminal comprising this amplifier
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申请号： US11393676申请日： 2006-03-31
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公开(公告)号： US20060170500A1公开(公告)日： 2006-08-03
- 发明人: Ryuichi Fujimoto , Tetsuro Itakura
- 申请人： Ryuichi Fujimoto , Tetsuro Itakura
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 优先权： JP2002-160621 20020331; JP2002-188946 20020628; JP2002-270984 20020918
- 主分类号： H03G3/12
- IPC分类号： H03G3/12
摘要：
An amplifier comprises an amplifier circuit which comprises a first inductor as an impedance element for degeneration, and a control circuit which has a second inductor electro-magnetically connected to the first inductor, and changes a control current flowing through the second inductor to change an inductance value of the first inductor, thereby changing amplification characteristics of the amplifier circuit.