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    System and Method for Controlling Resonance Frequency of Film Bulk Acoustic Resonator Devices
    1.
    发明申请
    System and Method for Controlling Resonance Frequency of Film Bulk Acoustic Resonator Devices 有权
    用于控制膜体积声谐振器器件的谐振频率的系统和方法

    公开(公告)号：US20090039981A1

    公开(公告)日：2009-02-12

    申请号：US11836538

    申请日：2007-08-09

    Applicant: Hiroyuki Ito ,  Hasnain Lakdawala ,  Ashoke Ravi ,  Krishnamurthy Soumyanath

    Inventor： Hiroyuki Ito ,  Hasnain Lakdawala ,  Ashoke Ravi ,  Krishnamurthy Soumyanath

    IPC: H03H9/13

    CPC classification number: H03H19/004 ,  H03H9/02007 ,  H03H2009/02204

    Abstract: Disclosed is a system and method for controlling a resonance frequency of a Film Bulk Acoustic Resonator (FBAR) device. The system includes at least one switching capacitor coupled to the FBAR device and a modulator. The at least one switching capacitor includes at least one capacitor and a switch configuration disposed in series with the FBAR device and the at least one capacitor, which is switch configuration capable of opening and closing connection of the at least one capacitor with the FBAR device. The modulator is coupled to the switch configuration, which generates a switching condition signal based on the manufacturing variation in the FBAR device and the environmental effects on the FBAR device. The switch configuration performs opening and closing of the connection of the at least one capacitor and the FBAR device based on the switching condition signal.

    Abstract translation: 公开了一种用于控制膜体声波谐振器（FBAR）装置的谐振频率的系统和方法。 该系统包括耦合到FBAR器件和调制器的至少一个开关电容器。 所述至少一个开关电容器包括至少一个电容器和与所述FBAR器件和所述至少一个电容器串联布置的开关配置，所述至少一个电容器是能够打开和关闭所述至少一个电容器与所述FBAR器件的连接的开关配置。 调制器耦合到开关配置，其根据FBAR器件的制造变化和对FBAR器件的环境影响产生开关条件信号。 开关配置基于开关条件信号来执行至少一个电容器和FBAR器件的连接的打开和闭合。

    Adaptively extending tunable range of frequency in a closed loop
    3.
    发明授权
    Adaptively extending tunable range of frequency in a closed loop 有权
    在闭环中自适应地扩展频率的可调范围

    公开(公告)号：US07119628B2

    公开(公告)日：2006-10-10

    申请号：US10985511

    申请日：2004-11-10

    Applicant: Ashoke Ravi ,  Krishnamurthy Soumyanath

    Inventor： Ashoke Ravi ,  Krishnamurthy Soumyanath

    IPC: H03L7/08

    CPC classification number: H03L7/18 ,  H03L7/0898 ,  H03L7/093 ,  H03L7/107

    Abstract: A semiconductor device or a circuit includes a controllable oscillator and circuitry that senses a voltage which may control the controllable oscillator and digitally controls a gain compensation, adaptively compensating for a drop in a gain against overall loop gain within a closed loop. In one embodiment, a single supply source may be used to power the closed loop while a variable gain stage that is digitally controllable may adjust the gain in a feed-forward manner based on the drop.

    Abstract translation: 半导体器件或电路包括可控振荡器和电路，其感测可控制可控振荡器并且数字控制增益补偿的电压，自适应地补偿增益中的下降与闭环内的整体环路增益。 在一个实施例中，可以使用单个供电源为闭环供电，而可数字控制的可变增益级可以基于该下降以前馈方式调节增益。

    Transformer coupled quadrature tuned oscillator
    8.
    发明授权
    Transformer coupled quadrature tuned oscillator 失效
    变压器耦合正交调谐振荡器

    公开(公告)号：US06639481B1

    公开(公告)日：2003-10-28

    申请号：US10224684

    申请日：2002-08-20

    Applicant: Ashoke Ravi ,  Krishnamurthy Soumyanath

    Inventor： Ashoke Ravi ,  Krishnamurthy Soumyanath

    IPC: H03L700

    CPC classification number: H03L7/00

    Abstract: First and second oscillator cells include tank circuits that may be tuned to a desired resonant frequency using varactors as variable reactance devices in a phase-shifting network. First and second transformers are connected to the oscillator cells to control the varactors.

    Abstract translation: 第一和第二振荡器单元包括可以使用变容二极管作为相移网络中的可变电抗装置来调谐到期望谐振频率的振荡电路。 第一和第二变压器连接到振荡器单元以控制变容二极管。

    Device and method of quadrature oscillation
    10.
    发明授权
    Device and method of quadrature oscillation 有权
    正交振荡的装置和方法

    公开(公告)号：US06937107B2

    公开(公告)日：2005-08-30

    申请号：US10608549

    申请日：2003-06-30

    Applicant: Ashoke Ravi ,  Krishnamurthy Soumyanath

    Inventor： Ashoke Ravi ,  Krishnamurthy Soumyanath

    IPC: H03B5/12 ,  H03B27/00 ,  H03B25/00

    CPC classification number: H03B27/00 ,  H03B5/1215 ,  H03B5/1225 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1271

    Abstract: Briefly, devices and methods for tuning of quadrature oscillators which may be used, for example, in a Complementary Metal-Oxide Semiconductor (CMOS) process. Devices and methods in accordance with some exemplary embodiments of the invention may allow, for example, improved locking, tuning and performance of slave oscillators and a master oscillator within a quadrature oscillator utilizing injection-locking.

    Abstract translation: 简单地说，可用于例如在互补金属氧化物半导体（CMOS）工艺中使用的正交振荡器的调谐的装置和方法。 根据本发明的一些示例性实施例的装置和方法可以允许例如利用注射锁定的正交振荡器中的从属振荡器和主振荡器的锁定，调谐和性能的改进。

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