利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

70 条记录 (耗时 0.013 秒)

    FREQUENCY AND/OR PHASE COMPENSATED MICROELECTROMECHANICAL OSCILLATOR
    3.
    发明公开
    FREQUENCY AND/OR PHASE COMPENSATED MICROELECTROMECHANICAL OSCILLATOR 审中-公开
    FREQUENZ-UND / ODER PHASENKOMPENSIERTER MIKROELEKTROMECHANISCHER OSZILLATOR

    公开(公告)号：EP3002878A1

    公开(公告)日：2016-04-06

    申请号：EP15185700.0

    申请日：2004-10-20

    申请人： ROBERT BOSCH GMBH

    发明人： Lutz, Markus ,  Partridge, Aaron

    IPC分类号： H03L7/00 ,  H03B5/04 ,  H03B5/30 ,  H03L1/04 ,  H03L7/07 ,  H03L1/02 ,  H03L7/08 ,  H03L7/081 ,  H03L7/197

    CPC分类号： H03L1/022 ,  H03B5/04 ,  H03B5/30 ,  H03L1/026 ,  H03L1/027 ,  H03L1/04 ,  H03L7/07 ,  H03L7/08 ,  H03L7/0812 ,  H03L7/1974

    摘要： A compensated microelectromechanical oscillator, having a microelectromechanical resonator that generates an output signal and frequency adjustment circuitry, coupled to the microelectromechanical resonator to receive the output signal of the microelectromechanical resonator and, in response to a set of values, to generate an output signal having second frequency. In one embodiment, the values may be determined using the frequency of the output signal of the microelectromechanical resonator, which depends on the operating temperature of the microelectromechanical resonator and/or manufacturing variations of the microelectromechanical resonator. In one embodiment, the frequency adjustment circuitry may include frequency multiplier circuitry, for example, PLLs, DLLs, digital/frequency synthesizers and/or FLLs, as well as any combinations and permutations thereof. The frequency adjustment circuitry, in addition or in lieu thereof, may include frequency divider circuitry, for example, DLLs, digital/frequency synthesizers (for example, DDS) and/or FLLs, as well as any combinations and permutations thereof.

    摘要翻译： 一种经补偿的微机电振荡器，其具有微机电谐振器，其产生输出信号和频率调节电路，耦合到微机电谐振器以接收微机电谐振器的输出信号，并且响应于一组值，以产生具有第二 频率。 在一个实施例中，可以使用取决于微机电谐振器的操作温度和/或微机电谐振器的制造变化的微机电谐振器的输出信号的频率来确定值。 在一个实施例中，频率调整电路可以包括倍频器电路，例如PLL，DLL，数字/频率合成器和/或FLL，以及它们的任何组合和排列。 频率调节电路，除了或代替它，可以包括分频器电路，例如DLL，数字/频率合成器（例如，DDS）和/或FLL，以及它们的任何组合和排列。

    Ovenized system containing micro-electromechanical resonator
    5.
    发明公开
    Ovenized system containing micro-electromechanical resonator 审中-公开
    Temperaturstabilisiertes System，das einen mikroelektromechanischen Resonatorenthält

    公开(公告)号：EP2595315A1

    公开(公告)日：2013-05-22

    申请号：EP11189555.3

    申请日：2011-11-17

    申请人： IMEC

    发明人： Borremans, Jonathan ,  Pertijs, Michiel

    IPC分类号： H03H9/02 ,  H03H9/08 ,  H03L1/04

    CPC分类号： H03H9/02448 ,  H03H9/08 ,  H03L1/022 ,  H03L1/04

    摘要： Device comprising an ovenized system containing a MEM resonator with mechanical supports forming heating resistances for heating the resonator body through Joules heating. A temperature control system controls the temperature of the resonator by driving an electrical current through the heating resistances. The internal voltage of the resonator body is monitored by means of a replica circuit comprising resistances in parallel over the heating resistances and replicating the resistance ratio thereof. A compensation means is connected to an intermediate connection of the replica circuit and compensates for deviations of the replicated voltage level at the intermediate connection from a predetermined voltage level.

    摘要翻译： 装置包括一个包含具有机械支撑件的MEM谐振器的烘箱系统，其形成用于通过焦耳加热加热谐振器本体的加热电阻。 温度控制系统通过驱动电流通过加热电阻来控制谐振器的温度。 谐振器本体的内部电压通过复合电路进行监视，复制电路在加热电阻上并联电阻并复制其电阻比。 补偿装置连接到复制电路的中间连接，并补偿中间连接处的复制电压电平与预定电压电平的偏差。

    APPARATUS AND METHOD OF TEMPERATURE COMPENSATING AN OVENIZED OSCILLATOR
    7.
    发明公开
    APPARATUS AND METHOD OF TEMPERATURE COMPENSATING AN OVENIZED OSCILLATOR 审中-公开
    DEVICE AND METHOD FOR温度补偿一个温度稳定振荡器

    公开(公告)号：EP2044691A2

    公开(公告)日：2009-04-08

    申请号：EP07796077.1

    申请日：2007-06-13

    申请人： CTS Corporation

    发明人： STOLPMAN, James, L.

    IPC分类号： H03L1/02 ,  H03L1/04

    CPC分类号： H03L1/023 ,  H03L1/028

    摘要： An oscillator having improved frequency stability which includes an oscillator circuit and an SC-cut resonator connected with the oscillator circuit. The SC-cut resonator has a first turning point. A temperature compensation circuit is connected with the oscillator circuit. The temperature compensation circuit is adapted to adjust a reference frequency generated by the oscillator circuit according to a frequency response associated with a second turning point of an AT-cut resonator.

    Control circuit for thermostatic oven in oven controlled crystal oscillator
    8.
    发明公开
    Control circuit for thermostatic oven in oven controlled crystal oscillator 有权
    Steinerschaltungfüreinen thermoatischen Ofen in einem ofengesteuerten Kristalloszillatoren

    公开(公告)号：EP2017963A1

    公开(公告)日：2009-01-21

    申请号：EP08160371.4

    申请日：2008-07-15

    申请人： Nihon Dempa Kogyo Co., Ltd.

    发明人： Ito, Manabu ,  Uchida, Takeshi

    IPC分类号： H03L1/02 ,  H03L1/04

    CPC分类号： H03L1/028

    摘要： Provided is a control circuit for a thermostatic oven in an oven controlled crystal oscillator, which is capable of further improving stability of an oscillation frequency. A control circuit in which a thermistor (12) whose resistance value changes according to a temperature outputs a signal according to the ambient temperature of the thermostatic oven inside the oscillator, an operational amplifier (13) outputs a signal according to a difference between the output of the thermistor (12) and a reference signal, a power transistor (14) amplifies the output of the operational amplifier (13), and a heater (15) generates heat based on a collector voltage of the power transistor (14), is provided with a temperature sensor circuit (20) having a transistor (21) with a base to which the output of the operational amplifier (13) is input. The control circuit outputs a collector voltage of the transistor (21) as an internal temperature signal which changes according to a temperature inside the oscillator.

    摘要翻译： 本发明提供一种能够进一步提高振荡频率稳定性的炉控晶体振荡器中的恒温炉的控制电路。 一种控制电路，其中电阻值根据温度变化的热敏电阻（12）根据振荡器内的恒温箱的环境温度输出信号，运算放大器（13）根据输出端之间的差输出信号 所述功率晶体管（14）放大所述运算放大器（13）的输出，并且加热器（15）基于所述功率晶体管（14）的集电极电压产生热量，是 设置有具有晶体管（21）的温度传感器电路（20），所述晶体管具有输入所述运算放大器（13）的输出端的基极。 控制电路输出晶体管（21）的集电极电压作为根据振荡器内的温度而变化的内部温度信号。

    Oscillator and communications device
    10.
    发明公开
    Oscillator and communications device 有权
    振荡器和通信设备

    公开(公告)号：EP0959557A1

    公开(公告)日：1999-11-24

    申请号：EP99109968.0

    申请日：1999-05-20

    申请人： Murata Manufacturing Co., Ltd.

    发明人： Fujii, Yasutaka, c/o Murata Manufacturing Co.,Ltd. ,  Sakamoto, Koichi, c/o Murata Manufacturing Co.,Ltd ,  Yamashita, Sadao, c/o Murata Manufacturing Co.,Ltd ,  Iio, Kenichi, c/o Murata Manufacturing Co.,Ltd. ,  Kajikawa, Takehisa, c/o Murata Manufacturing Co.

    IPC分类号： H03B5/18 ,  H03L1/04

    CPC分类号： H03B5/1864

    摘要： Disclosed is an oscillator (10) wherein, when adjusting the characteristics of the oscillator (10), the time-consuming removal of a cap (11) and a substrate (41) at each measurement is dispensed with, and which can be manufactured at low cost. The oscillator (10) comprises a dielectric resonator (20), a circuit board (40), and an adjustment mechanism for adjusting the relative positional relationship between the dielectric resonator (20) and the circuit board (40); the dielectric resonator (20) having a dielectric substrate (21), electrodes (22) provided on two opposite faces of the dielectric substrate (21), and electrode removal portions (23) provided at predetermined positions on the electrodes (22); and the adjustment means comprising screws (35) and springs (34) for moving the dielectric resonator (20).

    摘要翻译： 公开了一种振荡器（10），其中当调整振荡器（10）的特性时，省去了在每次测量时耗费的帽（11）和基板（41）的移除，并且其可以在 低成本。 振荡器（10）包括介质谐振器（20），电路板（40）和用于调节介质谐振器（20）和电路板（40）之间的相对位置关系的调节机构。 具有电介质基板（21）的电介质谐振器（20），设置在电介质基板（21）的两个相对面上的电极（22）以及设置在电极（22）上的预定位置处的电极移除部分（23）。 并且调节装置包括用于移动介质谐振器（20）的螺钉（35）和弹簧（34）。