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公开(公告)号：US06784757B2
公开(公告)日：2004-08-31
申请号：US10337019
申请日：2003-01-06
IPC分类号： H03B532
CPC分类号： H03B5/364
摘要： A highly stable single chip resonator controlled oscillator with automatic amplitude control and biasing is designed for manufacture with monolithic integrated circuit technologies. Analog and digital output buffers with elaborate control for power saving purposes and sophisticated start-up and power-up circuits ensure, that a crystal controlled oscillation is safely induced at start-up and that the amplitude of oscillation is continuously controlled during operation to reach low phase noise and reduce power consumption of the circuit.
摘要翻译： 具有自动幅度控制和偏置的高度稳定的单片谐振器控制振荡器设计用于采用单片集成电路技术制造。 模拟和数字输出缓冲器具有精心控制功率节省目的和复杂的启动和上电电路，确保了启动时安全地引发晶体振荡，振荡幅度在运行期间持续控制，达到低电平 相位噪声并降低电路的功耗。
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公开(公告)号：US06774735B2
公开(公告)日：2004-08-10
申请号：US10053198
申请日：2002-01-17
IPC分类号： H03B532
CPC分类号： H03K3/014 , H03B5/364 , H03K3/012 , H03K3/0307
摘要： A clock oscillator circuit that includes an inverting amplifier and a resonator configured to generate an oscillating signal. The clock oscillator includes a bias circuit having a relatively constant current source configured to create a bias voltage to bias the amplifier in an operating state that can sustain the oscillating signal. The inverting amplifier and the bias circuit are configured to operate in a low power state.
摘要翻译： 一种时钟振荡器电路，包括反相放大器和被配置为产生振荡信号的谐振器。 时钟振荡器包括具有相对恒定电流源的偏置电路，该电流源被配置为产生偏置电压，以将放大器偏置在能够维持振荡信号的操作状态。 反相放大器和偏置电路被配置为在低功率状态下工作。
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公开(公告)号：US06771135B2
公开(公告)日：2004-08-03
申请号：US10370177
申请日：2003-02-19
申请人： Kuichi Kubo , Fumio Asamura
发明人： Kuichi Kubo , Fumio Asamura
IPC分类号： H03B532
摘要： A temperature-compensated crystal oscillator (TCXO) comprises a voltage-controlled crystal oscillator (VCXO) having a crystal unit, a compensating voltage generator for generating a compensating voltage applied to the voltage-controlled crystal oscillator, a low pass filter inserted between the compensating voltage generator and voltage-controlled crystal oscillator, and a switching element connected in parallel with the low pass filter for short-circuiting across the low pass filter. In a manufacturing process of the temperature-compensated crystal oscillator, switching element is brought into a conducting state when an excitation electrode of the crystal unit is irradiated with an ion beam for adjusting the oscillation frequency.
摘要翻译： 温度补偿晶体振荡器（TCXO）包括具有晶体单元的压控晶体振荡器（VCXO），用于产生施加到压控晶体振荡器的补偿电压的补偿电压发生器，插入在补偿电压晶体振荡器 电压发生器和压控晶体振荡器，以及与低通滤波器并联连接的开关元件，用于跨低通滤波器短路。 在温度补偿晶体振荡器的制造过程中，当用用于调节振荡频率的离子束照射晶体单元的激励电极时，开关元件进入导通状态。
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公开(公告)号：US06737928B2
公开(公告)日：2004-05-18
申请号：US10205999
申请日：2002-07-26
申请人： Kuichi Kubo , Fumio Asamura
发明人： Kuichi Kubo , Fumio Asamura
IPC分类号： H03B532
CPC分类号： H03L1/023
摘要： A temperature-compensated crystal oscillator with good phase noise characteristics has a crystal unit, a voltage-variable capacitive element inserted in a closed oscillating loop including the crystal unit, and an amplifier for keeping oscillation in the closed oscillating loop. The frequency vs. temperature characteristics of the temperature-compensated crystal oscillator can be compensated for by the temperature compensating voltage input thereto. The temperature compensating voltage is applied to an anode of the voltage-variable capacitive element, and a voltage to prevent a current from flowing through the voltage-variable capacitive element is applied to a cathode of the voltage-variable capacitive element. The voltage-variable capacitive element preferably comprises a variable-capacitance diode.
摘要翻译： 具有良好相位噪声特性的温度补偿晶体振荡器具有晶体单元，插入包括晶体单元的闭合振荡环中的可变电容元件和用于在闭合振荡环中保持振荡的放大器。 温度补偿晶体振荡器的频率对温度特性可以通过输入到其的温度补偿电压进行补偿。 将温度补偿电压施加到电压可变电容元件的阳极，并且将防止电流流过可变电容元件的电压施加到电压可变电容元件的阴极。 电压可变电容元件优选地包括可变电容二极管。
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公开(公告)号：US06727769B2
公开(公告)日：2004-04-27
申请号：US10157999
申请日：2002-05-31
IPC分类号： H03B532
摘要： A crystal oscillator circuit using CMOSFETs including an oscillator circuit that is constructed of a resonating section and an amplifying section having a CMOSFET, a reference current source circuit for generating a reference current which determines a bias current of the amplifying section, and a control signal generator circuit for controlling the reference current source circuit to make a bias current larger than that in the oscillation status when the oscillator circuit is in the non-oscillation status. As a result, the reference current source circuit constant-current biases the DC bias of the amplifying section without depending on the source voltage. Therefore, it can lower the driving source voltage of the oscillator circuit. Further, only the bias current of the amplifying section is increased during the oscillation starting period of the oscillator circuit, so that the oscillator circuit can provide a stable oscillation with low power, without variations in the source voltage.
摘要翻译： 一种使用CMOSFET的晶体振荡器电路，包括由谐振部分和具有CMOSFET的放大部分构成的振荡器电路，用于产生确定放大部分的偏置电流的参考电流的参考电流源电路，以及控制信号发生器 用于控制参考电流源电路以在振荡器电路处于非振荡状态时使偏置电流大于振荡状态时的偏置电流。 因此，参考电流源电路恒流偏置放大部分的直流偏压而不依赖于源极电压。 因此，可以降低振荡电路的驱动源电压。 此外，在振荡电路的振荡开始期间，只有放大部分的偏置电流增加，使得振荡器电路能够以低功率提供稳定的振荡，而不会使源极电压发生变化。
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公开(公告)号：US06727767B2
公开(公告)日：2004-04-27
申请号：US10238988
申请日：2002-09-10
申请人： Yutaka Takada
发明人： Yutaka Takada
IPC分类号： H03B532
CPC分类号： H03B5/326
摘要： A voltage controlled oscillator is provided. The oscillator includes a surface acoustic wave element for forming a feedback circuit for an amplifier, and a phase adjustment circuit including a filter which is interposed in the feedback circuit. The oscillator also has a phase shifter including a hybrid coupler to which an additional control part is attached for changing a phase value within an oscillation loop with a control voltage supplied from an external source. An equal power divider equally distributes output power within the oscillation loop and supplies the output power outside the oscillation loop. A multi-layer board is used for mounting the amplifier, surface acoustic wave element, phase adjustment circuit, phase shifter, and equal power divider in at least two separate layers.
摘要翻译： 提供压控振荡器。 振荡器包括用于形成用于放大器的反馈电路的表面声波元件和包括插入在反馈电路中的滤波器的相位调整电路。 振荡器还具有包括混合耦合器的移相器，附加控制部分附加有用于通过从外部源提供的控制电压来改变振荡回路内的相位值。 相等的功率分配器在振荡环路内均匀分配输出功率，并将输出功率提供给振荡环路外部。 多层板用于将放大器，表面声波元件，相位调整电路，移相器和等功率分配器安装在至少两个分开的层中。
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公开(公告)号：US06661302B1
公开(公告)日：2003-12-09
申请号：US10135856
申请日：2002-04-30
IPC分类号： H03B532
摘要： A method and apparatus are provided for generating a control signal for compensating a temperature controlled crystal oscillator system for changes in an ambient temperature. The method includes the steps of providing a set of second-order coefficients relating ambient temperature to frequency drift over at least a portion of an operating temperature range of the temperature controlled crystal oscillator system and calculating a control signal for compensating the temperature controlled crystal oscillator system for the frequency drift due to the ambient temperature based upon the set of second-order coefficients.
摘要翻译： 提供了一种用于产生用于补偿温度控制的晶体振荡器系统以用于环境温度变化的控制信号的方法和装置。 该方法包括以下步骤：在温度控制的晶体振荡器系统的工作温度范围的至少一部分上提供将环境温度与频率漂移相关联的一组二阶系数，并计算用于补偿温度控制的晶体振荡器系统 用于由于基于二次系数的集合的环境温度引起的频率漂移。
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公开(公告)号：US06563390B1
公开(公告)日：2003-05-13
申请号：US09753063
申请日：2000-12-29
申请人： John W. Kizziar
发明人： John W. Kizziar
IPC分类号： H03B532
CPC分类号： H03B5/366 , H03B2201/0291 , H03J2200/10
摘要： An apparatus comprising a digitally controlled oscillator and a frequency tuning array. The digitally controlled oscillator may be configured to finely tune an output signal having a frequency in response to a digital signal. The frequency tuning array may be configured to generate the digital signal.
摘要翻译： 一种包括数字控制振荡器和频率调谐阵列的装置。 数字控制振荡器可以被配置为微调响应于数字信号的具有频率的输出信号。 频率调谐阵列可以被配置为产生数字信号。
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公开(公告)号：US06388534B1
公开(公告)日：2002-05-14
申请号：US09605492
申请日：2000-06-28
IPC分类号： H03B532
CPC分类号： H03B5/1876 , H03B2201/017
摘要： A crystal oscillator including a laser light source for emitting a laser beam to an aligned quartz crystal coupled to an oscillator circuit by an optical feedback network. The optical feedback network is responsive to variations of misalignment of the laser beam with the crystal and correction signals generated for introduction back to the crystal to bring its frequency back to a constant standard frequency output.
摘要翻译： 一种晶体振荡器，包括用于通过光学反馈网络将激光束发射到耦合到振荡器电路的对准石英晶体的激光源。 光学反馈网络响应于激光束与晶体的未对准变化以及为引入晶体而产生的校正信号，以使其频率回到恒定的标准频率输出。
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10.发明授权公开(公告)号：US06346862B2
公开(公告)日：2002-02-12
申请号：US09263295
申请日：1999-03-05
申请人： Eiichi Hasegawa , Haruhiko Otsuka
发明人： Eiichi Hasegawa , Haruhiko Otsuka
IPC分类号： H03B532
CPC分类号： H03B5/32
摘要： In a quartz oscillation circuit, electric current flowing through a quartz oscillator is reduced. Resistors Rg and Rd are provided respectively in any of paths formed by an output terminal, a capacitance element Cd and a power supply terminal VDD of a CMOS inverter 2 and any of paths formed by an input terminal, a capacitance element Cg and a power supply terminal VDD, thereby reducing a current flowing through a quartz oscillator. In particular, the total value of the resistors Rd and Rg is determined in a range of from 10&OHgr; to 320&OHgr;, thereby reducing a quartz current and obtaining a required negative resistance.
摘要翻译： 在石英振荡电路中，流过石英振荡器的电流减小。 电容器Rg和Rd分别设置在由CMOS反相器2的输出端子，电容元件Cd和电源端子VDD形成的任何路径中，以及由输入端子，电容元件Cg和电源 端子VDD，从而减少流过石英振荡器的电流。 特别地，电阻器Rd和Rg的总值在10OMEGA至320OMEGA的范围内确定，从而降低石英电流并获得所需的负电阻。
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