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    Apparatus and method for detecting a target environmental variable that employs film-bulk acoustic wave resonator oscillators
    1.
    发明授权
    Apparatus and method for detecting a target environmental variable that employs film-bulk acoustic wave resonator oscillators 有权
    用于检测使用膜 - 体声波谐振器振荡器的目标环境变量的装置和方法

    公开(公告)号：US07358651B2

    公开(公告)日：2008-04-15

    申请号：US11109108

    申请日：2005-04-18

    申请人： Richard C. Ruby ,  Graham M. Flower ,  John D. Larson, III ,  Mark A. Unkrich

    发明人： Richard C. Ruby ,  Graham M. Flower ,  John D. Larson, III ,  Mark A. Unkrich

    IPC分类号： H01L41/08

    CPC分类号： G01K11/265 ,  G01L1/165 ,  G01L9/0025 ,  H03H9/0542

    摘要： An apparatus and method for detecting a target environmental variable (TEV). A first film-bulk acoustic resonator (FBAR) oscillator that includes a first FBAR with a first response to the target environmental variable generates a first frequency. A second film-bulk acoustic resonator (FBAR) oscillator that includes a second FBAR with a second response to the target environmental variable generates a second frequency. A circuit that is coupled to the first FBAR oscillator and the second FBAR oscillator determines the target environmental variable (e.g., changes in the TEV) based on the first frequency and the second frequency.

    摘要翻译： 一种用于检测目标环境变量（TEV）的装置和方法。 包括对目标环境变量具有第一响应的第一FBAR的第一薄膜体声波谐振器（FBAR）振荡器产生第一频率。 包括具有对目标环境变量的第二响应的第二FBAR的第二薄膜 - 体声波谐振器（FBAR）振荡器产生第二频率。 耦合到第一FBAR振荡器和第二FBAR振荡器的电路基于第一频率和第二频率来确定目标环境变量（例如，TEV的变化）。

    Multiplexer with channel sectioning, selectivity actuated current sources, and common-base amplifiers
    2.
    发明授权
    Multiplexer with channel sectioning, selectivity actuated current sources, and common-base amplifiers 有权
    具有通道分段，选择性驱动电流源和公共基极放大器的多路复用器

    公开(公告)号：US06760349B1

    公开(公告)日：2004-07-06

    申请号：US09654635

    申请日：2000-09-05

    申请人： Peter Ho ,  Graham M. Flower ,  Richard C. Walker

    发明人： Peter Ho ,  Graham M. Flower ,  Richard C. Walker

    IPC分类号： H04J302

    CPC分类号： H04J3/047 ,  H03K17/6264

    摘要： A multiplexer for use with switching apparatus for data communication networks. The multiplexer topology includes two or more groupings, or sections, each containing a plurality of individual channels. Each of the channels has an input buffer amplifier and an output Ft-doubler circuit. The outputs of all of the channels within a each particular channel section are connected in parallel relation, and fed to respective common-base transistor amplifiers. The outputs of all of the common-base amplifiers for each channel section, in turn, are connected in parallel and fed to the inputs of a pair of emitter-follower amplifiers. Through the use of selectively actuated current sources, each multiplexer channel is normally biased off, unless that channel is selected for a switching operation. Bleeder current sources are applied to the emitters of the common-base amplifiers to reduce output jitter from the channels which are biased off. The multiplexer architecture provides high speed operation from channel sectioning, and low power consumption by reducing both the amount of current drawn and the voltage potential necessary, to operate the multiplexer.

    摘要翻译： 一种用于数据通信网络的交换装置的多路复用器。 复用器拓扑包括两个或更多个分组，每个分组包含多个单独的信道。 每个通道都有一个输入缓冲放大器和一个输出Ft倍增电路。 每个特定通道部分内的所有通道的输出以并联方式连接，并馈送到相应的公共基极晶体管放大器。 每个通道部分的所有公共基极放大器的输出又并联连接并馈送到一对发射极跟随放大器的输入端。 通过使用选择性激励的电流源，除非为切换操作选择了该通道，否则每个复用器通道通常被偏置。 泄放电流源被施加到公共基极放大器的发射极，以减少偏置的通道的输出抖动。 多路复用器架构通过减少所需的电流量和所需的电压来提供通道分段的高速操作和低功耗，以操作多路复用器。

    Film-bulk acoustic wave resonator with motion plate and method
    3.
    发明授权
    Film-bulk acoustic wave resonator with motion plate and method 有权
    具有运动板和方法的膜 - 体声波谐振器

    公开(公告)号：US07427819B2

    公开(公告)日：2008-09-23

    申请号：US11073345

    申请日：2005-03-04

    申请人： Storrs T. Hoen ,  Mark A. Unkrich ,  William R. Trutna ,  John D. Larson, III ,  Richard C Ruby ,  Graham M. Flower ,  Annette Grot

    发明人： Storrs T. Hoen ,  Mark A. Unkrich ,  William R. Trutna ,  John D. Larson, III ,  Richard C Ruby ,  Graham M. Flower ,  Annette Grot

    IPC分类号： H01L41/08 ,  G01R27/04

    CPC分类号： G01P15/097 ,  G01L1/165

    摘要： An apparatus and method for measuring a target environmental variable (TEV) that employs a film-bulk acoustic resonator with motion plate. The film-bulk acoustic resonator (FBAR) includes an acoustic reflector formed in an FBAR wafer and a surface. A first electrode is formed on the surface of the acoustic reflector and has a surface. A piezoelectric layer is formed on the surface of the first electrode and has a surface. A second electrode is formed on the surface of the piezoelectric layer. A motion plate is suspended in space at a predetermined distance relative to the surface of the second electrode and is capacitively coupled to the FBAR.

    摘要翻译： 一种用于测量采用具有运动板的膜 - 体声波谐振器的目标环境变量（TEV）的装置和方法。 膜 - 体声波谐振器（FBAR）包括形成在FBAR晶片和表面中的声反射器。 第一电极形成在声反射体的表面上并具有表面。 在第一电极的表面上形成压电层并具有表面。 第二电极形成在压电层的表面上。 运动板相对于第二电极的表面以预定距离悬挂在空间中，并且电容耦合到FBAR。

    Spread-spectrum radio utilizing MEMS components
    7.
    发明授权
    Spread-spectrum radio utilizing MEMS components 有权
    使用MEMS组件的扩频无线电

    公开(公告)号：US07429904B2

    公开(公告)日：2008-09-30

    申请号：US11262178

    申请日：2005-10-28

    申请人： William R. Trutna, Jr. ,  Mark A. Unkrich ,  Graham M. Flower

    发明人： William R. Trutna, Jr. ,  Mark A. Unkrich ,  Graham M. Flower

    IPC分类号： H03H9/54 ,  H04B1/00

    CPC分类号： H04B1/69 ,  H03H9/462 ,  H03H2007/006

    摘要： A spread-spectrum radio, such as a frequency-hopping spread-spectrum radio or a direct-sequence spread-spectrum radio, includes a transmitter that utilizes microelectromechanical systems (MEMS) based oscillation system to generate a spread-spectrum signal and/or a receiver that utilizes a MEMS-based frequency selection system to receive a spread-spectrum signal. In an embodiment, the MEMS-based oscillation system and the MEMS-based frequency selection system utilize MEMS resonators such as thin film bulk acoustic resonators (FBARs) that are fabricated in high density on a single substrate.

    摘要翻译： 诸如跳频扩频无线电或直接序列扩频无线电的扩频无线电设备包括利用基于微机电系统（MEMS）的振荡系统来生成扩频信号和/或 接收器，其利用基于MEMS的频率选择系统来接收扩频信号。 在一个实施例中，基于MEMS的振荡系统和基于MEMS的频率选择系统利用MEMS谐振器，例如在单个衬底上以高密度制造的薄膜体声波谐振器（FBAR）。