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11. 发明授权

US07548125B2 Frequency calibration for a monolithic clock generator and timing/frequency reference 有权
标题翻译：单片时钟发生器的频率校准和定时/频率参考
公开(公告)号：US07548125B2
公开(公告)日：2009-06-16
申请号：US11805427
申请日：2007-05-23
申请人： Gordon Carichner , Michael Shannon McCorquodale , Scott Michael Pernia , Sundus Kubba
发明人： Gordon Carichner , Michael Shannon McCorquodale , Scott Michael Pernia , Sundus Kubba
IPC分类号： G01R23/00 , H03B5/12
CPC分类号： H03L1/00 , G01R23/15 , H03L1/022 , H03L7/099
摘要： Exemplary embodiments of the invention provide a system, method and apparatus for frequency calibration of a free-running, reference harmonic oscillator. An exemplary system comprises the harmonic oscillator, a frequency divider, a comparator, and a reactance modulator. The reference harmonic oscillator includes a plurality of switchable reactance modules controlled by corresponding coefficients, and provides an oscillation signal having an oscillation frequency, which is divided or multiplied by the frequency divider to provide an output signal having an output frequency. The comparator compares the output frequency to an externally supplied reference frequency using first and second predetermined levels of discrimination, and provides first or second comparison signals when the output frequency is higher or lower than the reference frequency. The reactance modulator determines a plurality of coefficients to control switching of the plurality of switchable reactance modules to increase or decrease a reactance of the oscillator in response to the first and second comparison signals.
摘要翻译：本发明的示例性实施例提供了一种用于自由运行的参考谐波振荡器的频率校准的系统，方法和装置。示例性系统包括谐波振荡器，分频器，比较器和电抗调制器。参考谐波振荡器包括由相应系数控制的多个可切换电抗模块，并且提供具有振荡频率的振荡信号，该振荡信号被分频器分频或乘以分频器以提供具有输出频率的输出信号。比较器使用第一和第二预定等级的鉴别比较输出频率与外部提供的参考频率，并且当输出频率高于或低于参考频率时提供第一或第二比较信号。电抗调制器确定多个系数以控制多个可切换电抗模块的切换，以响应于第一和第二比较信号增加或减小振荡器的电抗。

12. 发明授权

US07719371B2 Spread spectrum clock and reference signal generator 有权
标题翻译：扩频时钟和参考信号发生器
公开(公告)号：US07719371B2
公开(公告)日：2010-05-18
申请号：US11967234
申请日：2007-12-30
申请人： Scott Michael Pernia , Gordon Carichner , Eric Marsman , Michael Shannon McCorquodale
发明人： Scott Michael Pernia , Gordon Carichner , Eric Marsman , Michael Shannon McCorquodale
IPC分类号： H03B29/00 , H03L7/06
CPC分类号： H03L5/00 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1253 , H03B5/1265 , H03B5/1287 , H03B5/1293 , H03B2200/005
摘要： Exemplary embodiments of the invention provide a system, method and apparatus for spread spectrum functionality for a free-running, reference harmonic oscillator. In an exemplary embodiment, an apparatus comprises a reference oscillator adapted to provide a reference signal having a reference frequency; and a spread spectrum controller adapted to control the reference oscillator to generate a spread-spectrum reference signal at a plurality of different reference frequencies during a predetermined or selected time period. An exemplary apparatus may also include a coefficient register adapted to store a plurality of coefficients and a plurality of controlled reactance modules responsive to a corresponding coefficient of the plurality of coefficients to modify an amount of reactance effectively coupled to the reference oscillator. An exemplary spread spectrum controller is further adapted to sequentially modify the plurality of coefficients during the predetermined time period to provide the spread spectrum reference signal.
摘要翻译：本发明的示例性实施例提供了一种用于自由运行的参考谐波振荡器的扩频功能的系统，方法和装置。在示例性实施例中，一种装置包括适于提供具有参考频率的参考信号的参考振荡器; 以及扩展频谱控制器，其适于在预定或选择的时间段期间控制参考振荡器以在多个不同参考频率处产生扩频参考信号。示例性装置还可以包括适于存储多个系数的系数寄存器和响应于多个系数的对应系数的多个受控电抗模块，以修改有效耦合到基准振荡器的电抗量。示例性扩频控制器还适于在预定时间段期间顺序修改多个系数以提供扩频参考信号。

13. 发明授权

US07978017B2 Control voltage generator for a clock, frequency reference, and other reference signal generator 有权
标题翻译：用于时钟，频率参考和其他参考信号发生器的控制电压发生器
公开(公告)号：US07978017B2
公开(公告)日：2011-07-12
申请号：US12013438
申请日：2008-01-12
申请人： Scott Michael Pernia , Nam Duc Nguyen , Michael Shannon McCorquodale , Justin O'Day , Ralph Beaudouin , Sundus Kubba
发明人： Scott Michael Pernia , Nam Duc Nguyen , Michael Shannon McCorquodale , Justin O'Day , Ralph Beaudouin , Sundus Kubba
IPC分类号： H03B5/08
CPC分类号： H03K3/011 , H03B5/04 , H03L1/00 , H03L1/026 , H03L5/00 , H03L7/00
摘要： Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, a control voltage generator adapted to provide a temperature-dependent control voltage; and a plurality of variable reactance modules. The reference resonator generates a first reference signal having a resonant frequency, and each reactance module is adapted to modify a corresponding reactance in response to the control voltage to maintain the resonant frequency substantially constant or within a predetermined variance over a predetermined temperature range. A frequency controller may also be included to maintain substantially constant a magnitude of a peak amplitude of the first reference signal and maintains substantially constant a common mode voltage level of the reference resonator.
摘要翻译：本发明的示例性实施例提供了一种参考信号发生器，系统和方法。产生谐波参考信号的示例性装置包括参考谐振器，例如LC槽，适于提供温度依赖控制电压的控制电压发生器; 以及多个可变电抗模块。参考谐振器产生具有谐振频率的第一参考信号，并且每个电抗模块适于响应于控制电压修改相应的电抗，以使谐振频率基本上恒定或在预定的温度范围内的预定方差内。还可以包括频率控制器以保持第一参考信号的峰值幅度的幅度基本上恒定，并且保持参考谐振器的共模电压电平基本恒定。

14. 发明授权

US08093958B2 Clock, frequency reference, and other reference signal generator with a controlled quality factor 有权
标题翻译：时钟，频率参考和其他具有受控质量因素的参考信号发生器
公开(公告)号：US08093958B2
公开(公告)日：2012-01-10
申请号：US12013440
申请日：2008-01-12
申请人： Justin O'Day , Michael Shannon McCorquodale , Scott Michael Pernia , Nam Duc Nguyen , Ralph Beaudouin , Sundus Kubba
发明人： Justin O'Day , Michael Shannon McCorquodale , Scott Michael Pernia , Nam Duc Nguyen , Ralph Beaudouin , Sundus Kubba
IPC分类号： H03L5/00
CPC分类号： H03L5/00 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1253 , H03B5/1265 , H03B5/1287 , H03B5/1293 , H03L1/02 , H03L7/08
摘要： Exemplary embodiments of the invention provide a reference signal generator having a controlled quality (“Q”) factor. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, which generates a first reference signal having a resonant frequency, and a plurality of reactance modules couplable to the reference resonator. Each reactance module comprises one or more reactance unit cells, and each reactance unit cell comprises a reactance element coupled in series to a switching element. In exemplary embodiments, the reactance element is a capacitor having a predetermined unit of capacitance, and the switching element is a transistor having a predetermined resistance when in an off state. The ratio of capacitance to resistance is substantially constant for all reactance modules of the plurality of reactance modules.
摘要翻译：本发明的示例性实施例提供具有受控质量（“Q”）因子的参考信号发生器。产生谐波参考信号的示例性装置包括产生具有共振频率的第一参考信号的参考谐振器，例如LC槽，以及可耦合到参考谐振器的多个电抗模块。每个电抗模块包括一个或多个电抗单位电池，并且每个电抗单元包括与开关元件串联耦合的电抗元件。在示例性实施例中，电抗元件是具有预定电容单位的电容器，并且当处于断开状态时，开关元件是具有预定电阻的晶体管。对于多个电抗模块的所有电抗模块，电容与电阻的比率基本上是恒定的。

15. 发明申请

US20090146750A1 Common Mode Controller for a Clock, Frequency Reference, and Other Reference Signal Generator 审中-公开
标题翻译：用于时钟，频率参考和其他参考信号发生器的共模控制器
公开(公告)号：US20090146750A1
公开(公告)日：2009-06-11
申请号：US12013437
申请日：2008-01-12
申请人： Scott Michael Pernia , Michael Shannon McCorquodale , Nam Duc Nguyen , Justin O'Day , Ralph Beaudouin , Sundus Kubba
发明人： Scott Michael Pernia , Michael Shannon McCorquodale , Nam Duc Nguyen , Justin O'Day , Ralph Beaudouin , Sundus Kubba
IPC分类号： H03B5/30 , H03B5/12 , H03L1/00 , H03L5/00
CPC分类号： H03L1/02 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1253 , H03B5/1265 , H03B5/1287 , H03B5/1293 , H03L5/00 , H03L7/08
摘要： Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, and a common mode controller. The reference resonator generates a first reference signal having a resonant frequency, and the common mode controller maintains substantially constant a common mode voltage level of the reference resonator. An amplitude controller may also be included to maintain substantially constant a magnitude of a peak amplitude of the first reference signal. A temperature-dependent control voltage also may be generated and utilized to maintain the resonant frequency substantially constant or within a predetermined variance of a calibrated or selected frequency.
摘要翻译：本发明的示例性实施例提供了一种参考信号发生器，系统和方法。用于产生谐波参考信号的示例性装置包括参考谐振器，例如LC槽和共模控制器。参考谐振器产生具有谐振频率的第一参考信号，并且共模控制器维持参考谐振器的共模电压电平基本恒定。还可以包括幅度控制器以维持第一参考信号的峰值幅度的幅度基本恒定。还可以产生温度依赖的控制电压并用于维持谐振频率基本上恒定或在校准或选定频率的预定变化范围内。

16. 发明申请

US20090146751A1 Clock, Frequency Reference, and Other Reference Signal Generator 审中-公开
标题翻译：时钟，频率参考和其他参考信号发生器
公开(公告)号：US20090146751A1
公开(公告)日：2009-06-11
申请号：US11950707
申请日：2007-12-05
申请人： Scott Michael Pernia , Michael Shannon McCorquodale , Nam Duc Nguyen , Justin O'Day , Ralph Beaudouin , Sundus Kubba
发明人： Scott Michael Pernia , Michael Shannon McCorquodale , Nam Duc Nguyen , Justin O'Day , Ralph Beaudouin , Sundus Kubba
IPC分类号： H03B5/12 , H03L1/00
CPC分类号： H03L7/08 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1293 , H03L1/02 , H03L5/00
摘要： Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, and a frequency controller. The reference resonator generates a first reference signal having a resonant frequency, and the frequency controller maintains substantially constant a magnitude of a peak amplitude of the first reference signal and maintains substantially constant a common mode voltage level of the reference resonator. A temperature-dependent control voltage is also generated and utilized to maintain the resonant frequency substantially constant or within a predetermined variance of a calibrated or selected frequency.
摘要翻译：本发明的示例性实施例提供了一种参考信号发生器，系统和方法。用于产生谐波参考信号的示例性装置包括参考谐振器，例如LC槽和频率控制器。参考谐振器产生具有谐振频率的第一参考信号，并且频率控制器维持第一参考信号的峰值幅度的幅度基本上恒定，并且保持参考谐振器的共模电压电平基本恒定。还产生温度依赖性控制电压并用于维持谐振频率基本上恒定或在校准或选定频率的预定变化范围内。

17. 发明申请

US20090146719A1 Control Voltage Generator for a Clock, Frequency Reference, and Other Reference Signal Generator 有权
标题翻译：用于时钟，频率参考和其他参考信号发生器的控制电压发生器
公开(公告)号：US20090146719A1
公开(公告)日：2009-06-11
申请号：US12013438
申请日：2008-01-12
申请人： Scott Michael Pernia , Michael Shannon McCorquodale , Nam Duc Nguyen , Justin O'Day , Ralph Beaudouin , Sundus Kubba
发明人： Scott Michael Pernia , Michael Shannon McCorquodale , Nam Duc Nguyen , Justin O'Day , Ralph Beaudouin , Sundus Kubba
IPC分类号： H03K3/00 , H03L1/00
CPC分类号： H03K3/011 , H03B5/04 , H03L1/00 , H03L1/026 , H03L5/00 , H03L7/00
摘要： Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, a control voltage generator adapted to provide a temperature-dependent control voltage; and a plurality of variable reactance modules. The reference resonator generates a first reference signal having a resonant frequency, and each reactance module is adapted to modify a corresponding reactance in response to the control voltage to maintain the resonant frequency substantially constant or within a predetermined variance over a predetermined temperature range. A frequency controller may also be included to maintain substantially constant a magnitude of a peak amplitude of the first reference signal and maintains substantially constant a common mode voltage level of the reference resonator.
摘要翻译：本发明的示例性实施例提供了一种参考信号发生器，系统和方法。产生谐波参考信号的示例性装置包括参考谐振器，例如LC槽，适于提供温度依赖控制电压的控制电压发生器; 以及多个可变电抗模块。参考谐振器产生具有谐振频率的第一参考信号，并且每个电抗模块适于响应于控制电压修改相应的电抗，以使谐振频率基本上恒定或在预定的温度范围内的预定方差内。还可以包括频率控制器以保持第一参考信号的峰值幅度的幅度基本上恒定，并且保持参考谐振器的共模电压电平基本恒定。

18. 发明申请

US20090146752A1 Clock, Frequency Reference, and Other Reference Signal Generator with a Controlled Quality Factor 有权
标题翻译：时钟，频率参考和其他具有受控质量因子的参考信号发生器
公开(公告)号：US20090146752A1
公开(公告)日：2009-06-11
申请号：US12013440
申请日：2008-01-12
申请人： Justin O'Day , Michael Shannon McCorquodale , Scott Michael Pernia , Nam Duc Nguyen , Ralph Beaudouin , Sundus Kubba
发明人： Justin O'Day , Michael Shannon McCorquodale , Scott Michael Pernia , Nam Duc Nguyen , Ralph Beaudouin , Sundus Kubba
IPC分类号： H03B5/04 , H03L1/00
CPC分类号： H03L5/00 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1253 , H03B5/1265 , H03B5/1287 , H03B5/1293 , H03L1/02 , H03L7/08
摘要： Exemplary embodiments of the invention provide a reference signal generator having a controlled quality (“Q”) factor. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, which generates a first reference signal having a resonant frequency, and a plurality of reactance modules couplable to the reference resonator. Each reactance module comprises one or more reactance unit cells, and each reactance unit cell comprises a reactance element coupled in series to a switching element. In exemplary embodiments, the reactance element is a capacitor having a predetermined unit of capacitance, and the switching element is a transistor having a predetermined resistance when in an off state. The ratio of capacitance to resistance is substantially constant for all reactance modules of the plurality of reactance modules.
摘要翻译：本发明的示例性实施例提供具有受控质量（“Q”）因子的参考信号发生器。产生谐波参考信号的示例性装置包括产生具有共振频率的第一参考信号的参考谐振器，例如LC槽，以及可耦合到参考谐振器的多个电抗模块。每个电抗模块包括一个或多个电抗单位电池，并且每个电抗单元包括与开关元件串联耦合的电抗元件。在示例性实施例中，电抗元件是具有预定电容单位的电容器，并且当处于断开状态时，开关元件是具有预定电阻的晶体管。对于多个电抗模块的所有电抗模块，电容与电阻的比率基本上是恒定的。

19. 发明申请

US20090146748A1 Amplitude Controller for a Clock, Frequency Reference, and Other Reference Signal Generator 审中-公开
标题翻译：时钟幅度控制器，频率参考和其他参考信号发生器
公开(公告)号：US20090146748A1
公开(公告)日：2009-06-11
申请号：US12013435
申请日：2008-01-12
申请人： Scott Michael Pernia , Michael Shannon McCorquodale , Nam Duc Nguyen , Justin O'Day , Ralph Beaudouin , Sundus Kubba
发明人： Scott Michael Pernia , Michael Shannon McCorquodale , Nam Duc Nguyen , Justin O'Day , Ralph Beaudouin , Sundus Kubba
IPC分类号： H03L5/00 , H03B5/12 , H03L1/00 , H03B5/30
CPC分类号： H03B5/04 , H03J2200/10 , H03L1/026 , H03L5/00
摘要： Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, and an amplitude controller. The reference resonator generates a first reference signal having a resonant frequency, and the amplitude controller maintains substantially constant a magnitude of a peak amplitude of the first reference signal. A common mode controller may also be included to maintain substantially constant a common mode voltage level of the reference resonator. A temperature-dependent control voltage also may be generated and utilized to maintain the resonant frequency substantially constant or within a predetermined variance of a calibrated or selected frequency.
摘要翻译：本发明的示例性实施例提供了一种参考信号发生器，系统和方法。用于产生谐波参考信号的示例性装置包括参考谐振器，例如LC槽，以及振幅控制器。参考谐振器产生具有谐振频率的第一参考信号，并且振幅控制器维持第一参考信号的峰值幅度的幅度基本恒定。还可以包括共模控制器以保持参考谐振器的共模电压电平基本恒定。还可以产生温度依赖的控制电压并用于维持谐振频率基本上恒定或在校准或选定频率的预定变化范围内。

20. 发明申请

US20110169585A1 Monolithic Clock Generator and Timing/Frequency Reference 审中-公开
标题翻译：单片时钟发生器和定时/频率参考
公开(公告)号：US20110169585A1
公开(公告)日：2011-07-14
申请号：US13069076
申请日：2011-03-22
申请人： Michael Shannon McCorquodale , Scott Michael Pernia , Amar Sarbbasesh Basu
发明人： Michael Shannon McCorquodale , Scott Michael Pernia , Amar Sarbbasesh Basu
IPC分类号： H03B5/12
CPC分类号： H03L1/02 , H03B5/04 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1253 , H03B5/1265 , H03B2200/0038 , H03B2200/005 , H03B2200/0098 , H03J2200/10 , H03L1/00 , H03L1/026 , H03L7/00 , H03L7/06 , H03L7/0812 , H03L7/099 , H03L7/24
摘要： In various embodiments, the invention provides a clock generator and/or a timing and frequency reference, with multiple operating modes, such power conservation, clock, reference, and pulsed modes. The various apparatus embodiments include a resonator adapted to provide a first signal having a resonant frequency; an amplifier; a temperature compensator adapted to modify the resonant frequency in response to temperature; and a process variation compensator adapted to modify the resonant frequency in response to fabrication process variation. In addition, the various embodiments may also include a frequency divider adapted to divide the first signal having the resonant frequency into a plurality of second signals having a corresponding plurality of frequencies substantially equal to or lower than the resonant frequency; and a frequency selector adapted to provide an output signal from the plurality of second signals. The output signal may be provided in any of various forms, such as differential or single-ended, and substantially square-wave or sinusoidal.
摘要翻译：在各种实施例中，本发明提供具有多种操作模式的时钟发生器和/或定时和频率参考，例如功率节省，时钟，参考和脉冲模式。各种装置实施例包括适于提供具有谐振频率的第一信号的谐振器; 放大器温度补偿器，其适于根据温度修改谐振频率; 以及适于响应于制造工艺变化来修改谐振频率的工艺变化补偿器。此外，各种实施例还可以包括分频器，其适于将具有谐振频率的第一信号划分成具有基本上等于或低于谐振频率的相应多个频率的多个第二信号; 以及适于提供来自所述多个第二信号的输出信号的频率选择器。输出信号可以以各种形式提供，例如差分或单端，以及基本方波或正弦。

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