Out-of-plane MEMS resonator with static out-of-plane deflection
    12.
    发明授权
    Out-of-plane MEMS resonator with static out-of-plane deflection 有权
    具有静态超平面偏转的平面外的MEMS谐振器

    公开(公告)号:US08258893B2

    公开(公告)日:2012-09-04

    申请号:US13173432

    申请日:2011-06-30

    Abstract: A microelectromechanical systems (MEMS) device includes a tuning electrode, a drive electrode, and a resonator. The resonator is anchored to a substrate and is configured to resonate in response to a signal on the drive electrode. The MEMS device includes a tuning plate coupled to the resonator and positioned above the tuning electrode. The tuning plate is configured to adjust a resonant frequency of the resonator in response to a voltage difference between the resonator and the tuning electrode. In at least one embodiment of the MEMS device, the tuning plate and the tuning electrode are configured to adjust the resonant frequency of the resonator substantially independent of the signal on the drive electrode.

    Abstract translation: 微机电系统(MEMS)装置包括调谐电极,驱动电极和谐振器。 谐振器被锚固到衬底并且被配置为响应于驱动电极上的信号而谐振。 MEMS器件包括耦合到谐振器并且定位在调谐电极上方的调谐板。 调谐板被配置为响应谐振器和调谐电极之间的电压差来调节谐振器的谐振频率。 在MEMS器件的至少一个实施例中,调谐板和调谐电极被配置为基本上独立于驱动电极上的信号来调节谐振器的谐振频率。

    Highly accurate temperature stable clock based on differential frequency discrimination of oscillators
    13.
    发明授权
    Highly accurate temperature stable clock based on differential frequency discrimination of oscillators 有权
    基于差分频率鉴别振荡器的高精度温度稳定时钟

    公开(公告)号:US07982550B1

    公开(公告)日:2011-07-19

    申请号:US12217190

    申请日:2008-07-01

    CPC classification number: H03L1/022 H03L7/085 H03L7/16

    Abstract: An apparatus and a method for compensating for a mismatch in temperature coefficients of two oscillator frequencies to match a desired frequency ratio between the two oscillator frequencies over a temperature range. In one embodiment of a temperature sensor, first and second oscillators of different temperature characteristics are coupled to a differential frequency discriminator (DFD) circuit. The DFD circuit compensates for the different characteristics in order to match a frequency difference between the first and second frequencies over a temperature range.

    Abstract translation: 一种用于补偿两个振荡器频率的温度系数不匹配以匹配温度范围内两个振荡器频率之间的期望频率比的装置和方法。 在温度传感器的一个实施例中,具有不同温度特性的第一和第二振荡器耦合到差分鉴频器(DFD)电路。 DFD电路补偿不同的特性,以便在温度范围内匹配第一和第二频率之间的频率差。

    METHOD FOR TEMPERATURE COMPENSATION IN MEMS RESONATORS WITH ISOLATED REGIONS OF DISTINCT MATERIAL
    15.
    发明申请
    METHOD FOR TEMPERATURE COMPENSATION IN MEMS RESONATORS WITH ISOLATED REGIONS OF DISTINCT MATERIAL 有权
    具有隔离材料隔离区域的MEMS谐振器中的温度补偿方法

    公开(公告)号:US20100093125A1

    公开(公告)日:2010-04-15

    申请号:US12638919

    申请日:2009-12-15

    Abstract: MEMS resonators containing a first material and a second material to tailor the resonator's temperature coefficient of frequency (TCF). The first material has a different Young's modulus temperature coefficient than the second material. In one embodiment, the first material has a negative Young's modulus temperature coefficient and the second material has a positive Young's modulus temperature coefficient. In one such embodiment, the first material is a semiconductor and the second material is a dielectric. In a further embodiment, the quantity and location of the second material in the resonator is tailored to meet the resonator TCF specifications for a particular application. In an embodiment, the second material is isolated to a region of the resonator proximate to a point of maximum stress within the resonator. In a particular embodiment, the resonator includes a first material with a trench containing the second material.

    Abstract translation: 包含第一材料和第二材料的MEMS谐振器以调整谐振器的频率温度系数(TCF)。 第一种材料具有与第二种材料不同的杨氏模量温度系数。 在一个实施例中,第一材料具有负杨氏模量温度系数,第二材料具有正的杨氏模量温度系数。 在一个这样的实施例中,第一材料是半导体,第二材料是电介质。 在另一实施例中,谐振器中的第二材料的数量和位置被调整为满足特定应用的谐振器TCF规格。 在一个实施例中,第二材料被隔离到谐振器附近的最大应力点处的谐振器的区域。 在特定实施例中,谐振器包括具有包含第二材料的沟槽的第一材料。

    Switchable electrode for power handling
    16.
    发明授权
    Switchable electrode for power handling 有权
    用于动力处理的可切换电极

    公开(公告)号:US08471641B2

    公开(公告)日:2013-06-25

    申请号:US13173815

    申请日:2011-06-30

    Abstract: A MEMS oscillator includes a resonator body and primary and secondary drive electrodes to electrostatically drive the resonator body. Primary and secondary sense electrodes sense motion of the resonator body. The primary and secondary drive and sense electrodes are configured to be used together during start-up of the MEMS oscillator. The secondary drive electrode and secondary sense electrode are disabled after start-up, while the primary drive and sense electrodes remain enabled to maintain oscillation.

    Abstract translation: MEMS振荡器包括谐振器体和用于静电驱动谐振器体的初级和次级驱动电极。 初级和次级感测电极感测谐振器体的运动。 主驱动和感测电极被配置为在MEMS振荡器启动期间一起使用。 辅助驱动电极和次级感测电极在启动后禁用,而主驱动电极和感测电极保持启用以保持振荡。

    Method for temperature compensation in MEMS resonators with isolated regions of distinct material
    17.
    发明授权
    Method for temperature compensation in MEMS resonators with isolated regions of distinct material 有权
    具有不同材料隔离区域的MEMS谐振器中的温度补偿方法

    公开(公告)号:US08464418B2

    公开(公告)日:2013-06-18

    申请号:US12638919

    申请日:2009-12-15

    Abstract: MEMS resonators containing a first material and a second material to tailor the resonator's temperature coefficient of frequency (TCF). The first material has a different Young's modulus temperature coefficient than the second material. In one embodiment, the first material has a negative Young's modulus temperature coefficient and the second material has a positive Young's modulus temperature coefficient. In one such embodiment, the first material is a semiconductor and the second material is a dielectric. In a further embodiment, the quantity and location of the second material in the resonator is tailored to meet the resonator TCF specifications for a particular application. In an embodiment, the second material is isolated to a region of the resonator proximate to a point of maximum stress within the resonator. In a particular embodiment, the resonator includes a first material with a trench containing the second material.

    Abstract translation: 包含第一材料和第二材料的MEMS谐振器以调整谐振器的频率温度系数(TCF)。 第一种材料具有与第二种材料不同的杨氏模量温度系数。 在一个实施例中,第一材料具有负杨氏模量温度系数,第二材料具有正的杨氏模量温度系数。 在一个这样的实施例中,第一材料是半导体,第二材料是电介质。 在另一实施例中,谐振器中的第二材料的数量和位置被调整为满足特定应用的谐振器TCF规格。 在一个实施例中,第二材料被隔离到谐振器附近的最大应力点处的谐振器的区域。 在特定实施例中,谐振器包括具有包含第二材料的沟槽的第一材料。

    Temperature compensated oscillator including MEMS resonator for frequency control
    18.
    发明授权
    Temperature compensated oscillator including MEMS resonator for frequency control 有权
    温度补偿振荡器包括用于频率控制的MEMS谐振器

    公开(公告)号:US08427251B2

    公开(公告)日:2013-04-23

    申请号:US11691330

    申请日:2007-03-26

    Abstract: Disclosed is an oscillator that relies on redundancy of similar resonators integrated on chip in order to fulfill the requirement of one single quartz resonator. The immediate benefit of that approach compared to quartz technology is the monolithic integration of the reference signal function, implying smaller devices as well as cost and power savings.

    Abstract translation: 公开了一种振荡器,其依赖于集成在芯片上的类似谐振器的冗余,以满足一个单个石英谐振器的要求。 与石英技术相比,该方法的直接好处是参考信号功能的单一集成,意味着较小的器件以及成本和功率节省。

    Encapsulated MEMS device and method to form the same
    19.
    发明授权
    Encapsulated MEMS device and method to form the same 有权
    封装的MEMS器件和方法形成相同

    公开(公告)号:US08349635B1

    公开(公告)日:2013-01-08

    申请号:US12124043

    申请日:2008-05-20

    Abstract: An encapsulated MEMS device and a method to form an encapsulated MEMS device are described. An apparatus includes a first substrate having a silicon-germanium seal ring disposed thereon and a second substrate having a metal seal ring disposed thereon. The metal seal ring is aligned with and bonded to the silicon-germanium seal ring to provide a sealed cavity. A MEMS device is housed in the sealed cavity. A method includes forming a silicon-germanium seal ring on a first substrate and forming a metal seal ring on a second substrate. The metal seal ring is bonded to the silicon-germanium seal ring to provide a sealed cavity that houses a MEMS device.

    Abstract translation: 描述了封装的MEMS器件和形成封装的MEMS器件的方法。 一种装置包括:第一基板,其上设置有硅锗密封环;第二基板,其上设置有金属密封环。 金属密封环与硅 - 锗密封环对准并结合,以提供密封腔。 MEMS器件容纳在密封腔中。 一种方法包括在第一基板上形成硅 - 锗密封环并在第二基板上形成金属密封环。 金属密封环被结合到硅 - 锗密封环上以提供容纳MEMS器件的密封腔。

    Temperature compensated oscillator including MEMS resonator for frequency control
    20.
    发明申请
    Temperature compensated oscillator including MEMS resonator for frequency control 有权
    温度补偿振荡器包括用于频率控制的MEMS谐振器

    公开(公告)号:US20120229220A1

    公开(公告)日:2012-09-13

    申请号:US11691330

    申请日:2007-03-26

    Abstract: Disclosed is an oscillator that relies on redundancy of similar resonators integrated on chip in order to fulfill the requirement of one single quartz resonator. The immediate benefit of that approach compared to quartz technology is the monolithic integration of the reference signal function, implying smaller devices as well as cost and power savings.

    Abstract translation: 公开了一种振荡器,其依赖于集成在芯片上的类似谐振器的冗余,以满足一个单个石英谐振器的要求。 与石英技术相比,该方法的直接好处是参考信号功能的单一集成,意味着较小的器件以及成本和功率节省。

Patent Agency Ranking