发明申请
- 专利标题： Tunable Impedance Matching Circuit
- 专利标题（中）： 可调阻抗匹配电路
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申请号： US12676335申请日： 2007-09-14
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公开(公告)号： US20100164645A1公开(公告)日： 2010-07-01
- 发明人: Kazuhiko Kobayashi , Yuu Watanabe , Paulo Augusto Dal Fabbro , Maher Kayal
- 申请人： Kazuhiko Kobayashi , Yuu Watanabe , Paulo Augusto Dal Fabbro , Maher Kayal
- 申请人地址： JP Kawasaki-shi, Kanagawa
- 专利权人： FUJITSU LIMITED
- 当前专利权人： FUJITSU LIMITED
- 当前专利权人地址： JP Kawasaki-shi, Kanagawa
- 国际申请： PCT/JP2007/068487 WO 20070914
- 主分类号： H03H7/38
- IPC分类号： H03H7/38
摘要：
The tunable impedance circuit comprises capacitors C1 and C2, an inductor L1, and an inductor L2 magnetically coupled with the inductor L1. The control current Icontrol with variable phase and amplitude from the control circuit 13 flows in the inductor L2. The impedance of the inductor L1 is changed by changing the phase and amplitude of the control current Icontrol. The output impedance is set to an optimum level by setting an effective inductance and an effective quality factor of the tunable impedance circuit 12a to be optimum by means of the phase and amplitude of the control current Icontrol relative to output current IRF of RF PA 11.