LOW NOISE OSCILLATORS
    2.
    发明申请
    LOW NOISE OSCILLATORS 审中-公开
    低噪声振荡器

    公开(公告)号:US20100127786A1

    公开(公告)日:2010-05-27

    申请号:US12276596

    申请日:2008-11-24

    IPC分类号: H03L5/00

    摘要: An oscillator having: a transistor; a resonant circuit coupled between an output electrode of the transistor and a control electrode of the transistor; and a dc bias circuit for the transistor. The dc bias circuit comprises: a voltage producing circuit and a differential amplifier. The differential amplifier includes: a first input coupled to a fixed reference voltage; a second input coupled to the voltage producing circuit, such voltage producing circuit producing a voltage at the second input of the difference amplifier related to current passing through the output electrode of the transistor; and an output coupled to the control electrode of the transistor.

    摘要翻译: 具有晶体管的振荡器; 耦合在所述晶体管的输出电极和所述晶体管的控制电极之间的谐振电路; 以及用于晶体管的直流偏置电路。 直流偏置电路包括:电压产生电路和差分放大器。 差分放大器包括:耦合到固定参考电压的第一输入; 耦合到电压产生电路的第二输入端,该电压产生电路在与通过晶体管的输出电极的电流相关的差分放大器的第二输入端产生电压; 以及耦合到晶体管的控制电极的输出。

    Oscillator module incorporating spiral looped-stub resonator
    3.
    发明授权
    Oscillator module incorporating spiral looped-stub resonator 有权
    振荡器模块包含螺旋环形短截线谐振器

    公开(公告)号:US06825734B2

    公开(公告)日:2004-11-30

    申请号:US10706895

    申请日:2003-11-13

    申请人: Roger L. Clark

    发明人: Roger L. Clark

    IPC分类号: H03B518

    CPC分类号: H01P7/082

    摘要: A transmission line configured as a looped-stub resonator is disclosed, which can be used as a frequency selective element for an oscillator, such as a VCO of a phase locked loop. The transmission line is a fraction of an electrical wavelength, and can be embedded to provide an inner resonant layer of an overall layered structure. The transmission line is formed into a loop or multiple loops and may be terminated with a capacitor, short circuit, or open circuit. In the embedded case, dielectric insulating material can be used to surround the transmission line on top and bottom surfaces as layers. In addition, electrically conducting material layers can be used to surround the dielectric insulating material.

    摘要翻译: 公开了一种配置为环形短截线谐振器的传输线,其可用作振荡器的频率选择元件,例如锁相环的VCO。 传输线是电波长的一部分,并且可以被嵌入以提供整体分层结构的内部谐振层。 传输线形成环路或多个环路,并且可以用电容器,短路或开路端接。 在嵌入式情况下,可以使用介电绝缘材料来围绕作为层的顶表面和底表面的传输线。 此外,可以使用导电材料层来围绕电介质绝缘材料。

    Pressure side integrated air filter and filtering networks for engines
    4.
    发明授权
    Pressure side integrated air filter and filtering networks for engines 失效
    压力侧集成空气过滤器和发动机过滤网络

    公开(公告)号:US5472463A

    公开(公告)日:1995-12-05

    申请号:US259633

    申请日:1994-06-14

    摘要: A pressure side integrated air filter assembly for a turbocharged engine includes an air filter carrier which is designed and arranged to receive an air filter element and which is adapted to mount to the intake manifold of the turbocharged engine. The air filter carrier which receives an air filtering element is disposed within the intake manifold and the intake manifold cover serves as the air filter cover. A peripheral flange on the air filter carrier is used to support the air filter assembly by being clamped between the intake manifold cover and the intake manifold. This peripheral flange substitutes for the intake manifold gasket. The air filter carrier and the air filter element each have a trapezoidal shape in cross section as a way to conserve space within the intake manifold. The air filter element is a single panel of filtering media which is fan-folded with a first series of folds disposed adjacent the intake manifold cover and an alternating second series of folds disposed at the outlet side of the air filter carrier. The integrated air filter assembly is mounted within the intake manifold and may be used as a security filter with a cannister filter positioned upstream from the turbocharger or with a precleaner air filter disposed upstream from the turbocharger.

    摘要翻译: 用于涡轮增压发动机的压力侧集成空气过滤器组件包括空气过滤器载体,空气过滤器载体被设计和布置成接收空气过滤器元件并且适于安装到涡轮增压发动机的进气歧管。 接收空气过滤元件的空气过滤器载体设置在进气歧管内,进气歧管盖用作空气过滤器盖。 空气过滤器载体上的外围法兰用于通过夹在进气歧管盖和进气歧管之间来支撑空气过滤器组件。 该外围法兰代替进气歧管垫圈。 空气过滤器载体和空气过滤器元件各自具有梯形形状的横截面,作为节省进气歧管内的空间的方式。 空气过滤器元件是单个过滤介质板,其被扇形折叠,其中邻近进气歧管盖布置的第一系列折叠和布置在空气过滤器载体的出口侧的交替的第二系列折叠。 集成式空气过滤器组件安装在进气歧管内,并且可以用作安全过滤器,其具有位于涡轮增压器上游的罐过滤器或者设置在涡轮增压器上游的预滤器空气过滤器。

    PASSIVE AND ACTIVE SUPPRESSION OF VIBRATION INDUCED PHASE NOISE IN OSCILLATORS
    6.
    发明申请
    PASSIVE AND ACTIVE SUPPRESSION OF VIBRATION INDUCED PHASE NOISE IN OSCILLATORS 有权
    振动诱发相位噪声的被动和主动抑制

    公开(公告)号:US20140104006A1

    公开(公告)日:2014-04-17

    申请号:US13650414

    申请日:2012-10-12

    IPC分类号: H03L7/00

    摘要: An oscillator system having: an UHF oscillator, such as a SAW oscillator, for producing a signal having a controllable frequency; a passive vibration, suppressor mechanically coupled to the UHF oscillator for suppressing vibrations above a predetermined bandwidth BW1 on the UHF oscillator; and an active vibration suppressor. The active vibration suppressor includes an accelerometer for sensing vibrations within a predetermined bandwidth BW2 on the UHF oscillator; and an HF or VHF oscillator, such as a crystal oscillator, producing a signal having a frequency controlled by the accelerometer. A control loop having a bandwidth changeable with sensed vibration level is fed the oscillator and the UHF oscillator for controlling the frequency of the signal produced by the SAW oscillator is accordance with a difference between the signal produced the HF or VHF oscillator and the signal produced by the UHF oscillator, the control loop having a bandwidth BW3; where BW1

    摘要翻译: 一种振荡器系统,具有:用于产生具有可控频率的信号的UHF振荡器,例如SAW振荡器; 机械耦合到UHF振荡器的被动振动抑制器,用于抑制在UHF振荡器上的预定带宽BW1以上的振动; 和主动减振器。 主动减振器包括用于感测在UHF振荡器上的预定带宽BW2内的振动的加速度计; 以及诸如晶体振荡器的HF或VHF振荡器,产生具有由加速度计控制的频率的信号。 具有可检测振动电平的带宽可变的控制回路馈送到振荡器,用于控制由SAW振荡器产生的信号的频率的UHF振荡器是根据产生HF或VHF振荡器的信号与由 UHF振荡器,控制回路具有带宽BW3; 其中BW1

    High stability double oven crystal oscillator
    7.
    发明授权
    High stability double oven crystal oscillator 有权
    高稳定性双炉晶体振荡器

    公开(公告)号:US07310024B2

    公开(公告)日:2007-12-18

    申请号:US11362649

    申请日:2006-02-25

    IPC分类号: H03B5/32 H03B1/00

    CPC分类号: H03B5/04 H03B5/366 H03L1/04

    摘要: A double oven crystal oscillator (DOCXO) is disclosed which is highly stable by incorporating means to reduce the effects of ambient pressure changes on the frequency of the oscillator. The oscillator crystal is mounted in a temperature controlled inner oven to reduce the effects on the frequency stability of the oscillator. The oscillator circuitry and all circuitry associated with the inner oven is mounted in good thermal contact with the inner oven. A Faraday shield at ground potential is placed over the oscillator circuitry to minimize the effects of stray capacitance between the oscillator components and the case wall of the inner oven. The effects of minor deformations in the case walls within the oscillator caused by ambient pressure changes and other factors causing pressure changes are thereby greatly minimized. To further reduce effects on oscillator frequency stability the ovens of the DOCXO are temperature controlled, cases are hermetically sealed, the case walls are rigid, and ovens and cases may be evacuated.

    摘要翻译: 公开了一种双炉晶体振荡器(DOCXO),其通过并入降低环境压力变化对振荡器频率的影响的方法而具有高度的稳定性。 振荡器晶体安装在温度控制的内部烘箱中,以减少对振荡器的频率稳定性的影响。 振荡器电路和与内部烘箱相关的所有电路与内部烘箱良好的热接触。 接地电位的法拉第屏蔽放置在振荡器电路上,以最小化振荡器部件与内部烘箱的壳体壁之间的杂散电容的影响。 由环境压力变化引起的振荡器外壳壁内的微小变形和导致压力变化的其他因素的影响因此大大降低。 为了进一步减少对振荡器频率稳定性的影响,DOCXO的炉子是温度控制的,壳体被气密密封,壳体壁是刚性的,并且炉子和壳体可能被排空。

    Evacuated hybrid ovenized oscillator
    8.
    发明授权
    Evacuated hybrid ovenized oscillator 有权
    抽真空混合烘箱

    公开(公告)号:US06731180B1

    公开(公告)日:2004-05-04

    申请号:US10056958

    申请日:2001-10-22

    IPC分类号: H03B532

    CPC分类号: H03B5/326 H03L1/04

    摘要: The present invention is for a thermally controlled package for oscillators, particularly evacuated miniature surface acoustical wave oscillators (EMSO) devices. In a preferred embodiment the surface acoustical wave device is bonded directly to a heated substrate. The package is evacuated to improve temperature characteristics. A temperature heater, sensor, and control controller are utilized to maintain the internal package temperature above ambient. In one embodiment there is an additional substrate layer that house components that are not sensitive to temperature with interconnects electrically connecting the heated substrate and the additional substrates.

    摘要翻译: 本发明是用于振荡器的热控封装,特别是抽真空的微型表面声波振荡器(EMSO)装置。 在优选实施例中,表面声波装置直接结合到加热的基底上。 将包装抽真空以改善温度特性。 利用温度加热器,传感器和控制控制器将内部封装温度保持在环境温度以上。 在一个实施例中,存在另外的衬底层,其容纳对温度不敏感的组件,互连件将电连接被加热的衬底和附加衬底。

    LOW NOISE OSCILLATORS
    9.
    发明申请
    LOW NOISE OSCILLATORS 有权
    低噪声振荡器

    公开(公告)号:US20110193641A1

    公开(公告)日:2011-08-11

    申请号:US13088733

    申请日:2011-04-18

    IPC分类号: H03B5/24

    摘要: An oscillator having: (A) a transistor for producing an oscillating output signal at an output electrode of the transistor. The oscillator includes; (B) a bias circuit for producing a bias signal for the transistor, said bias circuit including an amplifier coupled to the output electrode of the transistor; and (C) a circuit coupled between an output of the amplifier and a control electrode of the transistor, for isolating the bias signal provided by the amplifier from the oscillating signal.

    摘要翻译: 一种振荡器,具有:(A)用于在所述晶体管的输出电极处产生振荡输出信号的晶体管。 振荡器包括 (B)用于产生用于晶体管的偏置信号的偏置电路,所述偏置电路包括耦合到晶体管的输出电极的放大器; 和(C)耦合在所述放大器的输出端和所述晶体管的控制电极之间的电路,用于将所述放大器提供的偏置信号与所述振荡信号隔离。

    Passive and active suppression of vibration induced phase noise in oscillators
    10.
    发明授权
    Passive and active suppression of vibration induced phase noise in oscillators 有权
    被动和主动抑制振荡引起的相位噪声

    公开(公告)号:US08907734B2

    公开(公告)日:2014-12-09

    申请号:US13650414

    申请日:2012-10-12

    IPC分类号: H03B5/32 H03B5/36

    摘要: An oscillator system having: an UHF oscillator, such as a SAW oscillator, for producing a signal having a controllable frequency; a passive vibration, suppressor mechanically coupled to the UHF oscillator for suppressing vibrations above a predetermined bandwidth BW1 on the UHF oscillator; and an active vibration suppressor. The active vibration suppressor includes an accelerometer for sensing vibrations within a predetermined bandwidth BW2 on the UHF oscillator; and an HF or VHF oscillator, such as a crystal oscillator, producing a signal having a frequency controlled by the accelerometer. A control loop having a bandwidth changeable with sensed vibration level is fed the oscillator and the UHF oscillator for controlling the frequency of the signal produced by the SAW oscillator in accordance with a difference between the signal produced the HF or VHF oscillator and the signal produced by the UHF oscillator, the control loop having a bandwidth BW3; where BW1

    摘要翻译: 一种振荡器系统,具有:用于产生具有可控频率的信号的UHF振荡器,例如SAW振荡器; 机械耦合到UHF振荡器的被动振动抑制器,用于抑制在UHF振荡器上的预定带宽BW1以上的振动; 和主动减振器。 主动减振器包括用于感测在UHF振荡器上的预定带宽BW2内的振动的加速度计; 以及诸如晶体振荡器的HF或VHF振荡器,产生具有由加速度计控制的频率的信号。 具有可感测振动水平的带宽可变的控制回路馈送到振荡器和UHF振荡器,用于根据产生HF或VHF振荡器的信号与由RF或VHF振荡器产生的信号之间的差异来控制由SAW振荡器产生的信号的频率 UHF振荡器,控制回路具有带宽BW3; 其中BW1