公开(公告)号：US06724266B2

公开(公告)日：2004-04-20

申请号：US10169160

申请日：2002-09-24

申请人： Silvio Dalla Piazza ,  Pierre-André Farine ,  Roger Bühler ,  Pascal Heck

发明人： Silvio Dalla Piazza ,  Pierre-André Farine ,  Roger Bühler ,  Pascal Heck

IPC分类号： H03B504

CPC分类号： G04G3/027

摘要： The device (1) includes a mixer (4) which generates a signal (S4) having a frequency (F4) equal to the difference between two frequencies (F2, F3), which are those of two signals (S2, S3) each generated by a generator (2, 3) and which vary parabolically as a function of the temperature (T) with quadratic coefficients (&bgr;1,&bgr;2) that are different to each other. In order for the frequency (F4) of the signal (S4) generated by the mixer (4) to be at least substantially independent of the temperature (T), the generators (2, 3) are arranged such that the ratio of the quadratic coefficients (&bgr;1,&bgr;2) is equal to the inverse of the ratio of values (F2r, F3r) that the corresponding frequencies (F2, F3) have at a determined temperature (Tr).

摘要翻译： 设备（1）包括混合器（4），其产生具有等于两个频率（F2，F3）之间的差的频率（F4）的信号（S4），所述频率（F2，F3）是每个产生的两个信号（S2，S3） 通过发生器（2,3），并且以彼此不同的二次系数（β1，β2）作为温度（T）的函数以抛物线方式变化。为了使信号（S4）的频率（F4） 由所述混合器（4）产生的至少基本上不依赖于所述温度（T），所述发电机（2,3）被布置成使得所述二次系数（β1，β2）的比率等于所述比率 的值（F2r，F3r），相应的频率（F2，F3）在确定的温度（Tr）。

公开(公告)号：US06611177B2

公开(公告)日：2003-08-26

申请号：US10003241

申请日：2001-12-06

申请人： Kyoichi Takenaka ,  Akihiko Yoshizawa

发明人： Kyoichi Takenaka ,  Akihiko Yoshizawa

IPC分类号： H03B504

CPC分类号： H03K3/03 ,  H03K3/011 ,  H03K3/013 ,  H03K3/0231 ,  H03K3/0322 ,  H03K5/133 ,  H03K2005/00039 ,  H03K2005/00208

摘要： A voltage controlled oscillator includes an oscillation controller, first and second current sources, oscillation section, and first and second fluctuation transmitters. The oscillation controller generates first and second control potentials. The first and second current sources generate control currents corresponding to the first and second control potentials, respectively. The oscillation section is connected to a power source potential node via the first current source and connected to a ground potential node via the second current source, and generates a clock. The first fluctuation transmitter is disposed between the power source potential node and the first control potential node, and transmits a potential fluctuation in the power source potential node to the first control potential node. The second fluctuation transmitter is disposed between the ground potential node and the second control potential node, and transmits the potential fluctuation in the ground potential node to the second control potential node.

摘要翻译： 压控振荡器包括振荡控制器，第一和第二电流源，振荡部分以及第一和第二波动发射器。 振荡控制器产生第一和第二控制电位。第一和第二电流源分别产生对应于第一和第二控制电位的控制电流。 振荡部经由第一电流源与电源电位节点连接，经由第二电流源与地电位节点连接，生成时钟。 第一波动发射器设置在电源电势节点和第一控制电位节点之间，并且将电源电位节点中的电位波动发送到第一控制电位节点。 第二波动发射器设置在地电位节点和第二控制电位节点之间，并将地电势节点中的电位波动发送到第二控制电位节点。

公开(公告)号：US06525619B1

公开(公告)日：2003-02-25

申请号：US09651690

申请日：2000-08-30

申请人： Takeshi Shimizu ,  Masataka Kumaki

发明人： Takeshi Shimizu ,  Masataka Kumaki

IPC分类号： H03B504

CPC分类号： H03B5/362 ,  H03B5/06

摘要： A crystal-oscillator circuit includes an oscillation transistor having the collector or the base thereof at a ground potential. A first capacitor is connected between the base and the emitter of the oscillation transistor. A second capacitor is connected between the emitter and the collector. A quartz crystal resonator and a third capacitor are connected in series between the base and the collector. The third capacitor is disposed at the ground potential side. An oscillation signal is extracted from a node between the quartz crystal resonator and the capacitor.

摘要翻译： 晶体振荡器电路包括具有集电极或其基极的地电位的振荡晶体管。 第一电容器连接在振荡晶体管的基极和发射极之间。 第二电容器连接在发射极和集电极之间。 石英晶体谐振器和第三电容器串联在基极和集电极之间。 第三电容器设置在地电位侧。 从石英晶体谐振器和电容器之间的节点提取振荡信号。

公开(公告)号：US06366175B2

公开(公告)日：2002-04-02

申请号：US09729338

申请日：2000-12-05

申请人： Manabu Oka

发明人： Manabu Oka

IPC分类号： H03B504

CPC分类号： H03L1/023 ,  H03L1/025

摘要： A temperature compensated oscillator, a method of controlling a temperature compensated oscillator, and a wireless communication device are provided, where phase noise of the output signal can be reduced, frequency of the output signal stabilizes within a short time, and response of control does not become worse. Accordingly, a filter circuit is provided that removes noise contained in a temperature compensation voltage. A switching circuit is connected in parallel to this filter circuit. A power control circuit controls power supply to a voltage controlled oscillation circuit 28 and the like. The power control circuit turns on the switching circuit for a specified period when power supply to the voltage controlled oscillation circuit is started.

摘要翻译： 提供温度补偿振荡器，温度补偿振荡器的控制方法和无线通信装置，其中可以减少输出信号的相位噪声，输出信号的频率在短时间内稳定，并且控制的响应不 变得更糟 因此，提供了去除包含在温度补偿电压中的噪声的滤波器电路。 开关电路与该滤波电路并联连接。 功率控制电路控制到压控振荡电路28等的电源。 电源控制电路在开始向压控振荡电路供电时，将开关电路接通指定期间。

公开(公告)号：US06809557B2

公开(公告)日：2004-10-26

申请号：US10078130

申请日：2002-02-19

申请人： Claude Gauthier ,  Spencer Gold ,  Dean Liu ,  Kamran Zarrineh ,  Brian Amick ,  Pradeep Trivedi

发明人： Claude Gauthier ,  Spencer Gold ,  Dean Liu ,  Kamran Zarrineh ,  Brian Amick ,  Pradeep Trivedi

IPC分类号： H03B504

CPC分类号： G05F1/467

摘要： An apparatus that uses a linear voltage regulator to reject power supply noise in a temperature sensor is provided. Further, a method for using a linear voltage regulator to reject power supply noise in a temperature sensor is provided. Further, a method and apparatus that uses a differential amplifier with a source-follower output stage as a linear voltage regulator for a temperature sensor is provided.

摘要翻译： 提供了一种使用线性稳压器来抑制温度传感器中的电源噪声的装置。 此外，提供了一种使用线性电压调节器来抑制温度传感器中的电源噪声的方法。 此外，提供了一种使用具有源极跟随器输出级的差分放大器作为温度传感器的线性电压调节器的方法和装置。

公开(公告)号：US06501340B1

公开(公告)日：2002-12-31

申请号：US09683747

申请日：2002-02-11

申请人： John F. Flood

发明人： John F. Flood

IPC分类号： H03B504

CPC分类号： H03L1/04

摘要： An apparatus and method for stabilizing the frequency of a piezoelectric crystal resonator, especially useful in common emergency positioning radio beacons. A temperature compensated crystal oscillator circuit (TCXO) is mounted on one surface of a thin substrate. The TCXO includes a piezoelectric device such as a quartz resonator and a capacitor thermistor compensation network to reduce the frequency fluctuations of the crystal through variations in temperature. A heating circuit is mounted to the opposing surface of the substrate, thereby providing a thermal connection between the two circuits. The heating circuit includes a temperature sensor for sensing changes in ambient temperatures and a heater control amplifier for adjusting the power of a heating element. The substrate with the two circuits disposed thereon is suspended within a hermetically sealed enclosure by a plurality of support pins. The pins assist in supporting the substrate away from the interior walls of the enclosure thereby reducing heat loss. The crystal oscillator is therefore maintained within a certain temperature range while temperatures at which activity dips often occur are avoided. The invention is also a method for constructing an electronic component heater assembly, including the construction of conventional oven controlled crystal oscillators.

摘要翻译： 一种用于稳定压电晶体谐振器的频率的装置和方法，特别适用于普通的紧急定位无线电信标。 温度补偿晶体振荡器电路（TCXO）安装在薄基板的一个表面上。 TCXO包括诸如石英谐振器和电容热敏电阻补偿网络的压电器件，以通过温度变化来减小晶体的频率波动。 加热电路安装到基板的相对表面，从而在两个电路之间提供热连接。 加热电路包括用于感测环境温度变化的温度传感器和用于调节加热元件的功率的加热器控制放大器。 设置有两个电路的基板通过多个支撑销悬挂在密封的外壳内。 销有助于支撑基板远离外壳的内壁，从而减少热损失。 因此，避免晶体振荡器保持在一定温度范围内，同时通常发生活动下降的温度。 本发明也是一种用于构建电子部件加热器组件的方法，其包括常规的炉控晶体振荡器的构造。

公开(公告)号：US06456168B1

公开(公告)日：2002-09-24

申请号：US09751206

申请日：2000-12-29

申请人： Marlin Luff

发明人： Marlin Luff

IPC分类号： H03B504

CPC分类号： H03L1/028 ,  H03L1/04

摘要： A dual-cavity temperature compensated crystal oscillator (100) provides a three-layer ceramic package (110), with a crystal (170) sealed in a well or cavity (148). Oscillator components (180-184) such as a compensation circuit and an oscillator are attached through screened solder onto the back side of the ceramic package (110) and are encapsulated within potting compound or encapsulant. Electrical connection is provided between the oscillator and compensation circuitry and the piezoelectric element (170) to produce a frequency-controlled oscillator. After frequency tuning, a hermetic seal is provided between a cover (160) and ledge (140) to hermetically seal the cavity (148).

摘要翻译： 双腔温度补偿晶体振荡器（100）提供三层陶瓷封装（110），其中晶体（170）密封在阱或空腔（148）中。 诸如补偿电路和振荡器的振荡器组件（180-184）通过屏蔽焊料附着到陶瓷封装（110）的背面上，并被封装在灌封化合物或密封剂中。 在振荡器和补偿电路和压电元件（170）之间提供电连接以产生频率控制的振荡器。 在频率调谐之后，在盖（160）和凸缘（140）之间设置气密密封件以气密地密封空腔（148）。

公开(公告)号：US06271734B1

公开(公告)日：2001-08-07

申请号：US09506466

申请日：2000-02-17

申请人： Tomio Satoh

发明人： Tomio Satoh

IPC分类号： H03B504

CPC分类号： H03B5/32

摘要： A piezoelectric oscillator which is excellent in noise characteristic and aging characteristic is implemented by a piezoelectric oscillator comprising: a Colpitts oscillator including a piezoelectric resonator and an oscillation transistor; amplification means for amplifying an output of the Colpitts oscillator; and rectification means for rectifying an output of the amplification means, an output of the rectification means being fed back to base of the oscillation transistor to keep an oscillation output level constant, in which a base bias is set so as to provide the oscillation transistor with an operation point located in the vicinity of a saturation region, and in which a feedback current from the rectification means is supplied to the base of the oscillation resistor so as to make the operation point approach to the saturation region when the saturation output level has become high and so as to make the operation point go away from the saturation region when the oscillation output level has become low. As a result, a piezoelectric oscillator, which is excellent in both noise characteristic and aging characteristic, is realized.

摘要翻译： 噪声特性和老化特性优异的压电振荡器由压电振荡器实现，压电振荡器包括：包括压电谐振器和振荡晶体管的Colpitts振荡器; 用于放大Colpitts振荡器的输出的放大装置; 以及整流装置，用于对放大装置的输出进行整流，整流装置的输出反馈到振荡晶体管的基极，以保持振荡输出电平恒定，其中设置基极偏置以使振荡晶体管具有 位于饱和区域附近的操作点，并且其中来自整流装置的反馈电流被提供给振荡电阻器的基极，以便当饱和输出电平已经变成时使操作点接近饱和区域 并且当振荡输出电平变低时使得操作点离开饱和区域。 结果，实现了噪声特性和老化特性都优异的压电振荡器。

公开(公告)号：US06765448B2

公开(公告)日：2004-07-20

申请号：US10423261

申请日：2003-04-24

申请人： Yue Wu ,  Vladimir Aparin

发明人： Yue Wu ,  Vladimir Aparin

IPC分类号： H03B504

CPC分类号： H03B5/1228 ,  H03B5/1212 ,  H03B5/1221 ,  H03B5/1243 ,  H03B2200/0038

摘要： A self-biased voltage controlled oscillator (VCO) that includes a VCO core including a plurality of switching transistors, a resonant tank circuit operatively coupled to the VCO core, a current source operatively coupled to the VCO core for supplying a bias current to the VCO core, and a biasing circuit operatively coupled to both the resonant tank circuit and to the current source. The biasing circuit and the switching transistors of the VCO core cooperatively function to bias the current source, whereby the VCO is self-biased.

摘要翻译： 一种自偏置压控振荡器（VCO），其包括包含多个开关晶体管的VCO核心，可操作地耦合到VCO核心的谐振回路电路，可操作地耦合到VCO核心的电流源，用于向VCO提供偏置电流 核心以及可操作地耦合到谐振回路和电流源的偏置电路。 VCO核心的偏置电路和开关晶体管协同工作以偏置电流源，由此VCO是自偏置的。

公开(公告)号：US06646514B2

公开(公告)日：2003-11-11

申请号：US10026916

申请日：2001-12-27

申请人： Richard N. Sutliff ,  Jaroslaw E. Adamski ,  Ammar Yasser Rathore ,  Iyad Alhayek

发明人： Richard N. Sutliff ,  Jaroslaw E. Adamski ,  Ammar Yasser Rathore ,  Iyad Alhayek

IPC分类号： H03B504

CPC分类号： H03L3/00 ,  H03L1/025

摘要： A method and apparatus are provided for reducing a startup interval of a temperature controlled crystal oscillator chip. The method includes the steps of connecting an operating circuit of the temperature controlled crystal oscillator chip into a first configuration to reduce the startup interval following application of power and reconnecting the operating circuit into a second configuration after a predetermined time period.

摘要翻译： 提供了一种降低温度控制的晶体振荡器芯片的启动间隔的方法和装置。 该方法包括以下步骤：将温度控制晶体振荡器芯片的工作电路连接到第一配置中，以在施加电力之后减少启动间隔，并且在预定时间段之后将操作电路重新连接成第二配置。