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    • 9. 发明公开
    • 가변 용량 소자, 정합 회로 소자, 및 휴대 단말 장치
    • 可变电容器,匹配电路元件和移动终端设备
    • KR1020090090283A
    • 2009-08-25
    • KR1020090013902
    • 2009-02-19
    • 후지쯔 가부시끼가이샤
    • 시마노우찌다께아끼이마이마사히꼬미시아오유우에다사또시
    • H01G5/16H01L29/00
    • H01G5/16
    • A variable capacitor, a matching circuit element, and a portable terminal device are provided to control the impedance of a signal line by comprising the signal line and a ground electrode in a CPW(Coplanar Waveguide) structure. A variable capacitor(A1) includes a substrate(1), a signal line(2), a ground electrode(3), and a movable electrode. The signal line is formed in the surface of the substrate. The ground electrode is formed in the surface of the substrate. The movable electrode faces the signal line and the ground electrode. If the driving voltage is applied to the movable electrode, the movable electrode is displaced by the electrostatic attraction between the signal line and the ground electrode. An amount of displacement of the movable electrode is changed according to the size of the applied driving voltage.
    • 提供可变电容器,匹配电路元件和便携式终端装置,以通过包括CPW(共面波导)结构中的信号线和接地电极来控制信号线的阻抗。 可变电容器(A1)包括基板(1),信号线(2),接地电极(3)和可动电极。 信号线形成在基板的表面。 接地电极形成在基板的表面。 可动电极面对信号线和接地电极。 如果向可动电极施加驱动电压,则可动电极被信号线与接地电极之间的静电吸引力移位。 可移动电极的位移量根据所施加的驱动电压的大小而改变。