公开(公告)号：US06661295B2

公开(公告)日：2003-12-09

申请号：US09829129

申请日：2001-04-09

申请人： Thomas Knecht ,  Steven J. Fry ,  Richard Sutliff

发明人： Thomas Knecht ,  Steven J. Fry ,  Richard Sutliff

IPC分类号： H03L700

CPC分类号： H03L1/025 ,  H03L7/099 ,  H03L7/18

摘要： A frequency-adjustable oscillator suitable for digital signal clock synchronization comprises a crystal oscillator circuit for generating a driving signal and having a voltage-variable control input for adjusting a frequency of the driving signal, a phase detector circuit for generating a phase offset signal, a filter which operates on the phase offset signal to produce a VCO control signal, a voltage controlled oscillator circuit operably linked to the filter and responsive to the VCO control signal for generating an analog controlled-frequency signal, a frequency divider circuit for generating a reduced frequency feedback signal in response to the controlled-frequency signal, and a sinewave-to-logic level translator circuit for generating a digital output signal having substantially the same frequency as the controlled-frequency signal. The crystal oscillator circuit includes a discrete varactor responsive to the control input and a fundamental mode AT-cut quartz resonator. The frequency-adjustable oscillator operates according to specific operating output frequency to control input relationship.

公开(公告)号：US06946919B2

公开(公告)日：2005-09-20

申请号：US10047249

申请日：2002-01-14

申请人： Thomas Knecht ,  Marlin Luff ,  Steven J. Fry

发明人： Thomas Knecht ,  Marlin Luff ,  Steven J. Fry

IPC分类号： H03L1/02 ,  H03L7/099 ,  H03L7/18 ,  H03L7/00

CPC分类号： H03L7/18 ,  H01L2224/16 ,  H01L2924/01019 ,  H01L2924/01046 ,  H01L2924/01079 ,  H01L2924/13091 ,  H01L2924/1627 ,  H01L2924/3011 ,  H03L1/025 ,  H03L7/099

摘要： A frequency-adjustable oscillator suitable for digital signal clock synchronization comprises a crystal oscillator circuit for generating a driving signal and having a voltage-variable control input for adjusting a frequency of the driving signal, a phase detector circuit for generating a phase offset signal, a filter which operates on the phase offset signal to produce a VCO control signal, a voltage controlled oscillator circuit operably linked to the filter and responsive to the VCO control signal for generating an analog controlled-frequency signal, a frequency divider circuit for generating a reduced frequency feedback signal in response to the controlled-frequency signal. The frequency-adjustable oscillator also includes a double-sided package including a platform having a central portion and an outer portion with sidewalls extending substantially upwardly and substantially downwardly from the outer portion of the platform. The upwardly extending sidewalls and the platform form a first cavity adapted to receive and electrically connect the quartz resonator. The downwardly extending sidewalls and the platform forming a second cavity adapted to receive and electrically connect at least one electronic component. A cover is coupled with the first cavity to create an isolated environment for containing the quartz resonator.

摘要翻译： 适用于数字信号时钟同步的频率可调振荡器包括用于产生驱动信号并具有用于调节驱动信号的频率的电压可变控制输入的晶体振荡器电路，用于产生相位偏移信号的相位检测器电路， 滤波器，其对相位偏移信号进行操作以产生VCO控制信号;压控振荡器电路，其可操作地连接到所述滤波器并响应于所述VCO控制信号以产生模拟受控频率信号;分频器电路，用于产生降频 响应于受控频率信号的反馈信号。 频率可调节振荡器还包括双面封装，其包括具有中心部分的平台和具有从平台的外部部分基本向上且基本向下延伸的侧壁的外部部分。 向上延伸的侧壁和平台形成适于接收和电连接石英谐振器的第一腔。 向下延伸的侧壁和平台形成适于接收和电连接至少一个电子部件的第二腔。 盖与第一腔结合以产生用于容纳石英谐振器的隔离环境。

公开(公告)号：US6127661A

公开(公告)日：2000-10-03

申请号：US287779

申请日：1999-04-07

申请人： Steven J. Fry

发明人： Steven J. Fry

IPC分类号： H03L1/02 ,  H05B1/02 ,  H03B1/00

CPC分类号： H05B1/023 ,  H03L1/022

摘要： A heater control system for ovenized oscillators that is capable of changing the relative influence of multiple temperature sensors in order to keep a uniform temperature profile across the oscillator enclosure. A resonator is located near a heater in an enclosure. Several temperature sensors are located in proximity to the resonator for sensing temperature. One of the sensors is closer to the heater and another sensor is closer to an outer wall of the enclosure. A control circuit is connected between the sensors and the heater to provide a control signal to the heater, in response to the sensors. An adjustment circuit is connected to each of the sensors, for adjusting the relative influence that each sensor has on the control circuit.

摘要翻译： 一种用于加热器振荡器的加热器控制系统，其能够改变多个温度传感器的相对影响，以便在振荡器外壳上保持均匀的温度分布。 谐振器位于外壳中的加热器附近。 几个温度传感器位于谐振器附近，用于感测温度。 其中一个传感器更靠近加热器，另一个传感器更靠近外壳的外壁。 控制电路连接在传感器和加热器之间，以响应于传感器向加热器提供控制信号。 调整电路连接到每个传感器，用于调节每个传感器对控制电路的相对影响。

公开(公告)号：US06570461B1

公开(公告)日：2003-05-27

申请号：US09990642

申请日：2001-11-21

申请人： Steven J. Fry ,  Raymond M. Carlisle

发明人： Steven J. Fry ,  Raymond M. Carlisle

IPC分类号： H03L100

CPC分类号： H03B5/366 ,  H03B5/368

摘要： An oscillator assembly has a voltage controlled crystal oscillator that produces a stable reference frequency. The voltage controlled crystal oscillator is connected to an electronic frequency adjust voltage. A temperature compensation circuit is connected to the voltage controlled crystal oscillator. The temperature compensation circuit provides a temperature compensation voltage to the voltage controlled crystal oscillator. A trim effect compensation circuit is connected between the temperature compensation circuit and the electronic frequency adjust voltage. The trim effect compensation circuit adjusts the temperature compensation voltage in response to a change in the electronic frequency adjust voltage.

摘要翻译： 振荡器组件具有产生稳定参考频率的压控晶体振荡器。 压控晶体振荡器连接电子频率调节电压。 温度补偿电路连接到压控晶体振荡器。 温度补偿电路为压控晶体振荡器提供温度补偿电压。 温度补偿电路和电子频率调整电压之间连接一个微调效应补偿电路。 调整效果补偿电路根据电子频率调整电压的变化来调整温度补偿电压。

公开(公告)号：US06621361B1

公开(公告)日：2003-09-16

申请号：US09690336

申请日：2000-10-17

申请人： Steven J. Fry

发明人： Steven J. Fry

IPC分类号： H03B100

CPC分类号： H03L1/04

摘要： An ovenized oscillator has two ovens. One of the ovens is heated by a heater and the other is cooled by a thermoelectric module. The ovenized oscillator has an inner oven with an oscillator located inside. A thermoelectric heat pump cools the inner oven. An outer oven contains the inner oven and the thermoelectric heat pump. A heater heats the outer oven. The ovenized oscillator is operated with the inner oven temperature being lower than the outer oven temperature to improve component life and reduce crystal aging.

摘要翻译： 烤箱振荡器有两个烤箱。 其中一个烤箱被加热器加热，另一个由热电模块冷却。 烤箱振荡器内部有一个振荡器内部的烤箱。 热电热泵冷却内部烘箱。 外炉包含内炉和热电热泵。 加热器加热外部烤箱。 炉内振荡器的工作温度为炉内温度低于外部烘箱温度，以提高部件寿命并减少晶体老化。

公开(公告)号：US6133674A

公开(公告)日：2000-10-17

申请号：US179515

申请日：1998-10-27

申请人： Steven J. Fry

发明人： Steven J. Fry

IPC分类号： H03H9/08 ,  H03H9/10 ,  H01L41/04

CPC分类号： H03H9/0552 ,  H03H9/0528 ,  H03H9/08 ,  H03H9/1014

摘要： A low profile integrated oscillator operable to provide an oscillator signal includes a thermally conductive substrate having a cavity and a ledge. A crystal or other resonator is located in the cavity and mounted to the ledge. The resonator stabilizes the oscillator signal. An electrical circuit is mounted to the substrate and electrically connects to the resonator to condition the oscillator signal. A cover seals the resonator in the cavity. A via electrically connects the resonator to the electrical circuit. A heater is mounted to the substrate, outside the cavity, for elevating the temperature inside the cavity and a temperature sensor is mounted to the substrate to monitor the oscillator temperature. The substrate is surrounded by an insulation and mounted within a housing. The housing has a connector for connecting to an external electrical circuit.

摘要翻译： 可操作以提供振荡器信号的低剖面集成振荡器包括具有空腔和凸缘的导热基板。 晶体或其他谐振器位于空腔中并安装在凸缘上。 谐振器稳定振荡器信号。 电路安装到基板并电连接到谐振器以调节振荡器信号。 盖子密封腔中的谐振器。 A通孔将谐振器电连接到电路。 加热器安装在基体的外部，用于升高空腔内的温度，温度传感器安装在基板上以监测振荡器的温度。 衬底被绝缘体包围并安装在壳体内。 壳体具有用于连接到外部电路的连接器。

公开(公告)号：US6049256A

公开(公告)日：2000-04-11

申请号：US150825

申请日：1998-09-10

申请人： Steven J. Fry

发明人： Steven J. Fry

IPC分类号： H03H9/08 ,  H03H9/10 ,  H03L1/04 ,  H03B5/04 ,  H01L41/053 ,  H03B5/32

CPC分类号： H03H9/0528 ,  H03H9/0552 ,  H03H9/08 ,  H03H9/1014 ,  H03L1/04

摘要： A low profile integrated oscillator operable to provide an oscillator signal includes a substrate having a cavity and a via passing through the substrate. A crystal or other resonator is disposed in the cavity and stabilizes the oscillator signal. An electrical circuit means is mounted to the substrate and electrically connects to the via to condition the oscillator signal. A cover seals the resonator in the cavity. A connector electrically connects the resonator to the via. A heater is mounted to the substrate to elevate the oscillator temperature and a temperature sensor is mounted to the substrate to monitor and control the oscillator temperature. The substrate is surrounded by an insulation and mounted within a housing. The housing has a connection means for connecting to an external electrical circuit.

摘要翻译： 可操作以提供振荡器信号的低剖面集成振荡器包括具有空腔的衬底和穿过衬底的通孔。 晶体或其他谐振器设置在空腔中并稳定振荡器信号。 电路装置安装到基板上并电连接到通孔以调节振荡器信号。 盖子密封腔中的谐振器。 连接器将谐振器电连接到通孔。 将一个加热器安装到基板上以提升振荡器温度，并将温度传感器安装到基板上以监测和控制振荡器的温度。 衬底被绝缘体包围并安装在壳体内。 壳体具有用于连接到外部电路的连接装置。

公开(公告)号：US06559728B1

公开(公告)日：2003-05-06

申请号：US10025726

申请日：2001-12-19

申请人： Steven J. Fry

发明人： Steven J. Fry

IPC分类号： H03B532

CPC分类号： H03L1/04 ,  H05K1/0212 ,  H05K1/0237 ,  H05K1/141 ,  H05K3/321

摘要： A miniature ovenized crystal oscillator has a ceramic case that has a cavity, a bottom and a ledge that extends into the cavity. The case has several circuit lines. A substrate is located in the cavity and is supported by the ledge. The substrate has a top and bottom surface and several circuit lines. A crystal is mounted to the bottom surface of the substrate and is connected to the substrate circuit lines. A signal conditioning circuit is mounted to the top surface of the substrate and is connected to the substrate circuit lines. The case circuit lines are connected to the substrate circuit lines by a conductive epoxy. A heater is mounted to the bottom of the ceramic case. A thermal adhesive is located between the heater and the crystal. The thermal adhesive thermally links the crystal and the heater.

摘要翻译： 微型加热晶体振荡器具有陶瓷壳体，其具有延伸到腔体中的空腔，底部和凸缘。 这种情况有几条电路线。 衬底位于腔中并由凸缘支撑。 衬底具有顶表面和底表面以及几条电路线。 晶体被安装到基板的底表面并连接到基板电路线。 信号调理电路安装到基板的顶表面并连接到基板电路线。 壳体电路线通过导电环氧树脂连接到衬底电路线。 加热器安装在陶瓷外壳的底部。 热粘合剂位于加热器和晶体之间。 热粘合剂热连接晶体和加热器。

公开(公告)号：US06362700B1

公开(公告)日：2002-03-26

申请号：US09670477

申请日：2000-09-26

申请人： Steven J. Fry

发明人： Steven J. Fry

IPC分类号： H03B532

CPC分类号： H03L1/023 ,  H03B5/04 ,  H03L1/022 ,  H03L1/028 ,  H03L1/04

摘要： A temperature compensated crystal oscillator using an AT cut crystal produces a reference frequency. The temperature compensated crystal oscillator is located inside a temperature controlled oven. The temperature controlled oven provides a stable temperature to the temperature compensated crystal oscillator such that deviations from the reference frequency are reduced.

摘要翻译： 使用AT切割晶体的温度补偿晶体振荡器产生参考频率。 温度补偿晶体振荡器位于温度控制炉内。 温度控制炉为温度补偿晶体振荡器提供了稳定的温度，从而降低了与参考频率的偏差。