MEMS RF switch with low actuation voltage
    1.
    发明授权
    MEMS RF switch with low actuation voltage 有权
    具有低致动电压的MEMS RF开关

    公开(公告)号:US06639488B2

    公开(公告)日:2003-10-28

    申请号:US09948478

    申请日:2001-09-07

    IPC分类号: H01P110

    摘要: Disclosed is a capacitive electrostatic MEMS RF switch comprised of a lower electrode that acts as both a transmission line and as an actuation electrode. Also, there is an array of one or more fixed beams above the lower electrode that is connected to ground. The lower electrode transmits the RF signal when the top beam or beams are up and when the upper beams are actuated and bent down, the transmission line is shunted to ground ending the RF transmission. A high dielectric constant material is used in the capacitive portion of the switch to achieve a high capacitance per unit area thus reducing the required chip area and enhancing the insertion loss characteristics in the non-actuated state. A gap between beam and lower electrode of less than 1 &mgr;m is incorporated in order to minimize the electrostatic potential (pull-in voltage) required to actuate the switch.

    摘要翻译: 公开了一种电容静电MEMS RF开关,其由作为传输线和致动电极两者的下电极组成。 此外,在下电极上方有一个或多个连接到地面的固定梁的阵列。 当顶部梁或梁向上时,下部电极发射RF信号,并且当上部梁被致动并向下弯曲时,传输线被分流到结束RF传输的地面。 在开关的电容部分中使用高介电常数材料以实现每单位面积的高电容,从而在非致动状态下减少所需的芯片面积并增强插入损耗特性。 引入小于1um的光束和下电极之间的间隙以便使致动开关所需的静电电位(拉入电压)最小化。

    Counter-electrode for electrodeposition and electroetching of resistive substrates
    10.
    发明申请
    Counter-electrode for electrodeposition and electroetching of resistive substrates 审中-公开
    用于电沉积和电蚀基板电蚀的对电极

    公开(公告)号:US20060283709A1

    公开(公告)日:2006-12-21

    申请号:US11155495

    申请日:2005-06-20

    IPC分类号: C25C7/02

    CPC分类号: C25D17/10 C25D11/02 C25D17/12

    摘要: Various counter-electrodes for electroplating, electrodeposition or anodizing of substrates are disclosed. According to certain embodiments, multi-segmented counter-electrodes are provided. According to additional embodiments, counter-electrodes having concave or convex top surfaces are provided. The disclosed counter-electrodes enable greater control over electrodeposition, electroetching and anodizing processes for resistive substrates, as well as more uniform plating and etching of resistive substrates. Methods for electroplating, electrodeposition or anodizing of resistive substrates using multi-segmented counter-electrodes are also provided.

    摘要翻译: 公开了用于电镀,电沉积或阳极氧化基板的各种对电极。 根据某些实施例,提供多段对置电极。 根据另外的实施例,提供具有凹面或凸面顶面的对电极。 所公开的对电极能够更好地控制电沉积,电蚀和阳极氧化工艺的电阻衬底,以及更均匀的电镀和蚀刻电阻衬底。 还提供了使用多分段对电极的电镀,电沉积或阳极氧化电阻基板的方法。