公开(公告)号：US20040239433A1

公开(公告)日：2004-12-02

申请号：US10843346

申请日：2004-05-12

申请人： Fox Enterprises, Inc.

发明人： Eugene S. Trefethan ,  John W. Fallisgaard

IPC分类号： H03B005/32

CPC分类号： G06Q10/087 ,  G06Q10/025 ,  G06Q10/06311 ,  G06Q10/06315 ,  G06Q10/06395 ,  G06Q30/0202 ,  Y02P90/18 ,  Y02P90/20

摘要： A worldwide logistics network includes a processing center for receiving customer orders for crystal oscillators over communications links, processing the orders, and generating work orders that are selectively disseminated over communications links to programming centers at strategic locations around the world. Each of the programming centers carries an inventory of generic programmable crystal oscillators. Upon receipt of a work order, a programming center withdraws quantity of programmable crystal oscillators from inventory sufficient to fill the customer order, and, using automated parts handling equipment, the oscillators are successively directed to an interface position with a computer. There, the unique crystal frequency of each oscillator is read and each oscillator is uniquely programmed on the basis of its crystal frequency to generate an output frequency meeting customer specification. Upon completion of this final manufacturing steps the programmed crystal oscillators are shipped to the customers directly from the programming centers.

摘要翻译： 全球物流网络包括一个处理中心，用于通过通信链接接收客户的晶体振荡器订单，处理订单，并生成选择性地通过通信链接传播到世界各地战略位置的编程中心的工作订单。 每个编程中心都带有通用可编程晶体振荡器的清单。 编程中心收到工单后，从足以填补客户订单的库存中取出可编程晶体振荡器的数量，并使用自动化零件处理设备，振荡器依次指向与计算机的接口位置。 在那里，读取每个振荡器的独特晶体频率，并且每个振荡器基于其晶体频率进行唯一编程，以产生满足客户规格的输出频率。 在完成最终制造步骤后，编程晶体振荡器直接从编程中心运送给客户。

公开(公告)号：US20040169563A1

公开(公告)日：2004-09-02

申请号：US10376817

申请日：2003-02-28

发明人： Saeed Abbasi ,  Martin E. Perrigo ,  Carol A. Price

IPC分类号： H03B005/32

CPC分类号： H03L7/107 ,  H03L7/0812 ,  H03L7/085 ,  H03L7/095

摘要： A phase locked loop (PLL) circuit adjusts a voltage controlled differential oscillator to generate an output frequency signal that is a selected multiple of an input reference signal. An oscillator control circuit increases and decreases the output frequency signal. A frequency detector detects a phase shift between the reference signal and the PLL output signal and produces an error signal. In response to the error signal, a fast lock circuit detects when the output frequency signal passes the selected multiple of the reference signal.

摘要翻译： 锁相环（PLL）电路调节压控差分振荡器以产生作为输入参考信号的选定倍数的输出频率信号。 振荡器控制电路增加和减少输出频率信号。 频率检测器检测参考信号和PLL输出信号之间的相移并产生误差信号。 响应于误差信号，快速锁定电路检测输出频率信号何时通过所选择的参考信号的倍数。

公开(公告)号：US20040155716A1

公开(公告)日：2004-08-12

申请号：US10473761

申请日：2004-02-19

发明人： Yukinori Sasaki

IPC分类号： H03B005/32

CPC分类号： H03H9/177 ,  H03H9/132 ,  H03H9/562 ,  H03H9/581

摘要： A piezoelectric oscillator using zinc oxide as a piezoelectric plate which eliminates unwanted resonance called inharmonic overtone by optimizing ratio Le/H of driving electrode length Le to oscillator thickness H. Ratio Le/H is set between 4 and 100 in the piezoelectric oscillator polarized in a thickness direction of a piezoelectric plate and using thickness extension vibration as main vibration or the piezoelectric oscillator polarized in a length direction of the piezoelectric plate and using thickness shear vibration as main vibration. This achieves stable characteristic because no unwanted resonance exists between the resonance frequency and anti-resonance frequency of the main vibration.

摘要翻译： 使用氧化锌作为压电板的压电振荡器，其通过优化驱动电极长度Le与振荡器厚度H的比率Le / H来消除不需要的共振称为非调谐泛音。在压电振荡器中将比率Le / H设置在4和100之间， 压电板的厚度方向，使用厚度延伸振动作为主振动，或压电振荡器在压电板的长度方向上极化并使用厚度剪切振动作为主振动。 这实现了稳定的特性，因为在主振动的谐振频率和反共振频率之间不存在不需要的共振。

公开(公告)号：US20040124936A1

公开(公告)日：2004-07-01

申请号：US10330559

申请日：2002-12-30

发明人： Shenggao Li

IPC分类号： H03B005/32

CPC分类号： H03L7/18 ,  H03L7/0896 ,  H03L7/0898 ,  H03L7/10 ,  H03L7/105

摘要： A system and method for controlling a phase-locked loop detects a deadlock condition and then adjusts an output frequency of an oscillator until the deadlock condition is corrected. The deadlock condition may be detected based on a value of a charge pump signal which controls the oscillator frequency. In accordance with one embodiment, deadlock is detected if the value of the charge pump signal approaches one of two supply rail voltages. The deadlock condition is overcome by manipulating current signals output from the charge pump. This is accomplished by turning off the current from one charge-pump current source and increasing current from a second-charge pump current source. The increased current may be provided by a third current source located within or external to the charge pump. By adding current from the third current source, the output frequency of the phase-locked loop will be driven lower until a value is reached which effectively pulls the PLL out of the deadlock condition.

摘要翻译： 用于控制锁相环的系统和方法检测死锁状况，然后调整振荡器的输出频率直到纠正死锁状态。 可以基于控制振荡器频率的电荷泵信号的值来检测死锁状态。 根据一个实施例，如果电荷泵信号的值接近两个电源电压之一，则检测到死锁。 通过操纵从电荷泵输出的电流信号来克服死锁状况。 这是通过关闭来自一个电荷泵电流源的电流和从第二电荷泵电流源增加电流来实现的。 增加的电流可以由位于电荷泵内部或外部的第三电流源提供。 通过从第三个电流源添加电流，锁相环的输出频率将被驱动较低，直到达到有效地将PLL从死锁状态拉出的值。

公开(公告)号：US20040108911A1

公开(公告)日：2004-06-10

申请号：US10727127

申请日：2003-12-03

申请人： Toyo Communication Equipment Co., Ltd.

发明人： Tomio Satoh

IPC分类号： H03B005/32

CPC分类号： H03L1/028 ,  H03L1/023

摘要： The invention provides a temperature compensated crystal oscillator that can obtain a large variable range and that can obtain high temperature stability. This temperature compensation system employs a configuration comprising a oscillation circuit 12 including a crystal vibrator 11 having a piezoelectric element excited in a given frequency and an oscillation amplifier that excites the piezoelectric element by flowing a current to the piezoelectric element, a vibrator current control circuit 13 that controls the current of the crystal vibrator, a temperature compensation voltage generation circuit 15 that compensates for temperature characteristics of the crystal vibrator 11, and an external variable capacitance diode 17 that changes the oscillation frequency of the oscillation circuit 12 using an external variable voltage controller 16. The vibrator current control circuit 13 comprises a variable capacitance diode 14 that controls the vibrator current, and capacitors 1 to 3.

摘要翻译： 本发明提供一种温度补偿晶体振荡器，其可以获得大的可变范围并且可以获得高温稳定性。 该温度补偿系统采用包括振荡电路12的结构，振荡电路12包括具有以给定频率激励的压电元件的晶体振子11和通过使电流流向压电元件而激发压电元件的振荡放大器，振子电流控制电路13 控制晶体振子的电流，补偿晶体振子11的温度特性的温度补偿电压生成电路15和使用外部可变电压控制器来改变振荡电路12的振荡频率的外部可变电容二极管17 振子电流控制电路13包括控制振子电流的可变电容二极管14和电容器1至3。

公开(公告)号：US20040090280A1

公开(公告)日：2004-05-13

申请号：US10692001

申请日：2003-10-24

发明人： Ramon A. Gomez

IPC分类号： H03B005/00 ,  H03B005/32

CPC分类号： H03B5/364

摘要： A resonant oscillator circuit includes an active device and a resonator that causes the active device to oscillate at a resonant frequency of the resonator. The active device includes one or more transistors that are DC biased using one or more resistors. The bias resistors generate thermal noise that is proportional to the resistance value. An external inductor circuit is connected across the output terminals of the active device and in parallel with the resonator. The external inductor circuit shorts-out at least some of the thermal noise that is generated by the bias resistors, and thereby reduces the overall phase noise of the resonant oscillator.

摘要翻译： 谐振振荡器电路包括有源器件和谐振器，其使得有源器件以谐振器的谐振频率振荡。 有源器件包括使用一个或多个电阻器直流偏置的一个或多个晶体管。 偏置电阻产生与电阻值成比例的热噪声。 外部电感电路连接在有源器件的输出端上并与谐振器并联。 外部电感器电路将由偏置电阻产生的至少一些热噪声短路，从而降低谐振振荡器的整体相位噪声。

公开(公告)号：US20040036546A1

公开(公告)日：2004-02-26

申请号：US10636151

申请日：2003-08-07

发明人： Masaaki Arai ,  Masakazu Nishiwaki

IPC分类号： H03B005/32

CPC分类号： H03H9/1021 ,  H03H9/0547

摘要： A surface-mount quartz crystal oscillator has a casing having a recess defined therein, a quartz crystal blank fixedly mounted on the bottom of the recess, and an IC (Integrated Circuit) chip having an integrated oscillating circuit connected to the crystal blank. The casing has a frame wall which defines the recess. The IC chip has an outer peripheral edge joined to an upper surface of the frame wall. The crystal blank is hermetically sealed in a space surrounded by the casing and the IC chip. IC connecting terminals are disposed on the upper surface of the frame wall for connection to IC terminals on the IC chip.

摘要翻译： 表面安装的石英晶体振荡器具有限定在其中的凹部的壳体，固定地安装在凹部的底部的石英晶体空白以及具有连接到晶体坯的集成振荡电路的IC（集成电路）芯片。 壳体具有限定凹部的框架壁。 IC芯片具有与框架壁的上表面接合的外周边缘。 晶体坯料被封装在由壳体和IC芯片包围的空间内气密密封。 IC连接端子设置在框架壁的上表面上，用于连接IC芯片上的IC端子。

公开(公告)号：US20030227339A1

公开(公告)日：2003-12-11

申请号：US10456007

申请日：2003-06-06

发明人： Toshikatsu Makuta

IPC分类号： H03B005/32

CPC分类号： H03H9/1021 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/49171 ,  H01L2924/01057 ,  H01L2924/01079 ,  H01L2924/19041 ,  H03H9/0547 ,  H01L2924/00014 ,  H01L2924/00

摘要： A surface-mount quartz crystal oscillator has a casing substantially in the shape of a substantially rectangular parallelepiped, the casing having a recess defined therein, a pair of upper steps disposed in the recess, a lower step disposed in the recess and having electrically conductive pads thereon, a crystal blank having an end secured to one of the upper steps and an opposite end placed on the other of the upper steps, and an IC chip disposed on the bottom of the recess and electrically connected to the electrically conductive pads by wires according to wire bonding, the IC chip including a circuit, the circuit and the crystal blank jointly making up an oscillating circuit. The wires extend in a direction substantially perpendicular to a longitudinal direction of the casing.

摘要翻译： 表面安装的石英晶体振荡器具有基本上为大致长方体形状的壳体，壳体具有限定在其中的凹部，设置在凹部中的一对上部台阶，设置在凹部中的下部台阶，并具有导电垫 其上具有固定到上台阶中的一个上的台阶和放置在另一个上台阶上的相对端的晶体坯料，以及设置在凹部底部并与导电焊盘电连接的导线的IC芯片， 为了引线键合，IC芯片包括电路，电路和晶体毛坯，共同组成振荡电路。 电线在与壳体的纵向大致垂直的方向上延伸。

公开(公告)号：US20030206070A1

公开(公告)日：2003-11-06

申请号：US10138027

申请日：2002-05-03

发明人： David M. Pietruszynski ,  Douglas R. Frey

IPC分类号： H03B005/32

CPC分类号： H03K3/0307 ,  H03B5/32 ,  H03B2201/025 ,  H03J2200/10 ,  H03L7/099

摘要： A method of tuning a DCXO includes the step of providing a coarse tuning array and a fine tuning array of capacitors fabricated on the same integrated circuit die. The coarse array is adjusted until the difference between a desired frequency and the output frequency corresponds to a change in capacitance no greater than half the range of the fine tuning array. In one embodiment, the fine tuning array is adjusted to mid-range before adjusting the coarse tuning array. A DCXO apparatus includes at least one integrated circuit segmented switched capacitor network providing a capacitance that is a nonmonotonic function of a composite input code. The segmented switched capacitor network includes parallel coupled binary weighted and thermometer coded switched capacitor networks for coarse and fine tuning, respectively.

摘要翻译： 调谐DCXO的方法包括提供在同一集成电路管芯上制造的粗调谐阵列和电容器的微调阵列的步骤。 调整粗阵列，直到期望频率和输出频率之间的差值对应于不大于微调阵列范围的一半的电容变化。 在一个实施例中，在调整粗调谐阵列之前，将微调阵列调整到中等范围。 DCXO装置包括至少一个集成电路分段的开关电容器网络，其提供作为复合输入代码的非单调功能的电容。 分段开关电容网络分别包括用于粗调和微调的并联耦合二进制加权和温度计编码的开关电容器网络。

公开(公告)号：US20030132811A1

公开(公告)日：2003-07-17

申请号：US10333130

申请日：2003-01-16

发明人： Yoshiaki Nagaura

IPC分类号： H03B005/32

CPC分类号： H03H9/02157 ,  H01L41/337 ,  H03H3/02 ,  H03H9/132 ,  H03H9/19 ,  Y10T29/49005 ,  Y10T29/4908

摘要： A lens shape piezoelectric device thinner than the manufacture limit thickness, which is conventionally difficult to manufacture, and a method for manufacturing the same. The piezoelectric device has a oscillation part of at least two steps where one side thereof is planar and opposite side is thickest at the peripheral holding portion and thinner toward the central portion. A piezoelectric element of another mode has a oscillation part of at least two steps where the peripheral holding portion is thickest on both sides and the thickness decreases toward the central portion. In these piezoelectric devices, at least one side of the thinnest central portion of the oscillation part has a convex lens shape. A pair of electrodes are vacuum deposited in the center these oscillation parts on both sides, and a gold wire is led as a lead wire from each electrode.

摘要翻译： 比通常难以制造的制造极限厚度薄的透镜形状的压电元件及其制造方法。 压电装置具有至少两个台阶的振荡部分，其一侧是平面的，相对侧在周边保持部分处最厚，并且朝向中心部分较薄。 另一模式的压电元件具有至少两个台阶的振荡部分，其中外围保持部分在两侧最厚，并且厚度朝向中心部分减小。 在这些压电装置中，振动部的最薄中央部的至少一侧具有凸透镜形状。 一对电极在两侧的这些振动部分的中心真空沉积，并且金线作为引线从每个电极引导。