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1. 发明申请

WO2015121779A3 A drive circuitry for MEMS resonator startup 审中-公开
标题翻译：用于MEMS谐振器启动的驱动电路
公开(公告)号：WO2015121779A3
公开(公告)日：2015-12-10
申请号：PCT/IB2015050902
申请日：2015-02-06
申请人： MURATA MANUFACTURING CO
发明人： AALTONEN LASSE
IPC分类号： G01C19/5776 , H03B5/00
CPC分类号： G01C19/5712 , G01C19/5776 , H03B5/06 , H03B5/364
摘要： A drive circuitry for a MEMS resonator. The circuitry comprises closed loop means for detecting and amplifying a signal of the MEMS resonator, and means for feeding the detected and amplified signal as a feedback signal back to the MEMS resonator. The circuitry also comprises DC bias voltage means for generating for the MEMS resonator a first DC bias voltage, and a second DC bias voltage that is controlled according to measured amplitudes of the MEMS resonator, one of the DC bias voltages being summed into the feedback signal. The circuitry comprises also a start-up circuitry adapted to detect a start-up state, and in response to a detected start-up state change at last one of the DC bias voltages to a predefined level. The state of constant oscillation is achieved reliably and in short time.
摘要翻译：用于MEMS谐振器的驱动电路。电路包括用于检测和放大MEMS谐振器的信号的闭环装置，以及用于将检测和放大的信号作为反馈信号馈送回到MEMS谐振器的装置。电路还包括用于为MEMS谐振器产生第一DC偏置电压的DC偏置电压装置和根据MEMS谐振器的测量幅度来控制的第二DC偏置电压，将一个DC偏置电压加到反馈信号中。该电路还包括适于检测启动状态的启动电路，并且响应于检测到的最后一个DC偏置电压的启动状态改变到预定义的电平。恒定振荡的状态在短时间内可靠实现。

2. 发明申请

WO2011049596A1 FAST START, LOW POWER OSCILLATOR SYSTEM 审中-公开
标题翻译：快速起动，低功率振荡器系统
公开(公告)号：WO2011049596A1
公开(公告)日：2011-04-28
申请号：PCT/US2010/002416
申请日：2010-09-02
申请人： LOJACK OPERATING COMPANY, LP , FEDAN, Orest
发明人： FEDAN, Orest
IPC分类号： H03B5/00 , H03L5/00
CPC分类号： H03B5/362 , H03B5/06 , H03B5/366 , H03L3/00
摘要： A fast start, low power oscillator system includes an oscillator circuit including an amplifier and a tank circuit, the amplifier including an operating resistance which sets the amplifier operating current and a speed-up circuit including a switching circuit for temporarily increasing the operating current to an elevated level at start-up and then returning it to the original operating current when the oscillator reaches its operating amplitude.
摘要翻译：一种快速起动低功率振荡器系统，包括一个包括放大器和一个振荡电路的振荡器电路，该放大器包括一个设置放大器工作电流的工作电阻和一个加速电路，该加速电路包括用于将工作电流暂时增加到一个当振荡器达到其工作幅度时，启动时电平升高，然后将其恢复到原始工作电流。

3. 发明申请

WO2010111857A1 亚阈值集成电路中抗工艺涨落的方法和体电位调制电路审中-公开
公开(公告)号：WO2010111857A1
公开(公告)日：2010-10-07
申请号：PCT/CN2009/073744
申请日：2009-09-04
申请人：浙江大学 , 罗豪 , 韩雁
发明人：罗豪 , 韩雁
IPC分类号： H03B5/00 , H03K3/356
CPC分类号： H03C1/36

4. 发明申请

WO2004036734A2 PULSE GENERATOR 审中-公开
标题翻译：脉冲发生器
公开(公告)号：WO2004036734A2
公开(公告)日：2004-04-29
申请号：PCT/IB2003/004170
申请日：2003-09-19
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , LEENAERTS, Dominicus, M., W. , VAN DER WEIDE, Gerard
发明人： LEENAERTS, Dominicus, M., W. , VAN DER WEIDE, Gerard
IPC分类号： H03B5/00
CPC分类号： H03K5/156 , H03K5/00006 , H03K5/06 , H03K5/159
摘要： A pulse generator comprising a series coupling of delay elements (D1, D2, D3, D4, D5) every two consecutive delay elements (D1, D2, D3, D4, D5) being coupled at a plurality of coupling points (A1, A2, A3, A4), the series coupling of delay elements (D1, D2, D3, D4, D5) having a first end (A0) and a second end (A5) coupled to a first signal (y) and a second signal (x), respectively, the first and second signals (x, y) having a same frequency and being mutually phase-shifted, the pulse generator being characterized in that it further comprises a zero-crossing detector (3) coupled to two mutually different coupling points (A2, A3) for generating an output pulse (O) having a duration determined by a ratio between a number of delay elements between the two different coupling points and a total delay of the series coupling of delay elements.
摘要翻译：包括每两个连续延迟元件（D1，D2，D3，D4，D5）的延迟元件（D1，D2，D3，D4，D5）的串联耦合的脉冲发生器以多个的耦合点（A1，A2，A3，A4），延迟元件（D1，D2，D3，D4，D5）的串联耦合具有第一端（A0）和第二端（A5） y）和第二信号（x），所述第一和第二信号（x，y）具有相同的频率并且相互相移，所述脉冲发生器的特征在于其还包括过零检测器（3 ）耦合到两个彼此不同的耦合点（A2，A3），用于产生具有由两个不同耦合点之间的延迟元件的数量与延迟的串联耦合的总延迟之间的比率确定的持续时间的输出脉冲（O）元件。

5. 发明申请

WO99017438A1 OSCILLATOR 审中-公开
标题翻译：振荡器
公开(公告)号：WO99017438A1
公开(公告)日：1999-04-08
申请号：PCT/IB1998/001269
申请日：1998-08-19
IPC分类号： H03B1/04 , H03B1/00 , H03B5/00 , H03B5/12 , H03K3/013 , H03K3/0231
CPC分类号： H03K3/0231 , H03B5/1215 , H03B5/1231 , H03B5/1243 , H03B2200/004 , H03B2200/0098 , H03B2201/0208 , H03B2202/082 , H03K3/013
摘要： An oscillator is formed by a resonator (RES) coupled to an amplifier (AMP) via a coupling path (COP). In order to counter unwanted oscillations due to parasitic resonances in the coupling path (COP), the coupling path (COP) includes a series resistance (RS). To improve the noise-performance even more a series capacitance can be included in the coupling path (COP). Such a series capacitance will also effectively widen a frequency range over which the oscillator can be tuned.
摘要翻译：振荡器由耦合到放大器（AMP）的耦合路径（COP）的谐振器（RES）形成。为了防止由耦合路径（COP）中的寄生谐振引起的不希望的振荡，耦合路径（COP）包括串联电阻（RS）。为了更好地提高噪声性能，串联电容可以包括在耦合路径（COP）中。这样的串联电容也将有效地加宽振荡器可被调谐的频率范围。

6. 发明申请

WO2022052594A1 振荡电路审中-公开
公开(公告)号：WO2022052594A1
公开(公告)日：2022-03-17
申请号：PCT/CN2021/103780
申请日：2021-06-30
申请人：长鑫存储技术有限公司
发明人：季汝敏 , 许海宁
IPC分类号： H03B5/00 , H03L7/099
摘要：一种振荡电路，包括：恒定电压提供模块（11），用于输出恒定电压；恒定电流提供模块（12），用于输出恒定电流；振荡模块（13），连接所述恒定电压提供模块（11）和所述恒定电流提供模块（12），用于根据所述恒定电压和所述恒定电流产生预设频率的振荡信号，可以提供不受温度影响的稳定的振荡信号。

7. 发明申请

WO2017058824A1 VALLEY DETECTION CIRCUIT AND DRIVE CIRCUIT 审中-公开
标题翻译：谷检测电路和驱动电路
公开(公告)号：WO2017058824A1
公开(公告)日：2017-04-06
申请号：PCT/US2016/054020
申请日：2016-09-27
申请人： CYPRESS SEMICONDUCTOR CORPORATION
发明人： YABUTA, Shun
IPC分类号： H02M3/156 , G05F1/00 , H02M3/335 , H02M3/338 , H03B5/00 , H03L5/00 , H03L5/02
CPC分类号： H03K5/1536 , G01R19/175 , H02M1/083 , H02M3/335 , H02M2001/0054 , H03K17/133 , H03K17/687 , Y02B70/1491
摘要： A technique for detecting a valley timing at lower cost is described. A drive circuit comprises a peak voltage holder, a valley voltage holder, a center voltage generator, a monitor, and a detector. The peak voltage holder holds a peak voltage of an oscillating signal that is based on a voltage at a terminal of an inductor coupled to a switching element. The valley voltage holder holds a valley voltage of the oscillating signal. The center voltage generator generates a center voltage based on the peak voltage and the valley voltage. The monitor monitors the present value of the voltage at the terminal. The detector detects, as a valley timing, a timing at which a predetermined delay time has elapsed from a timing at which the monitored present value of the voltage at the terminal has fallen below the center voltage.
摘要翻译：描述了以较低成本检测谷值时序的技术。驱动电路包括峰值电压保持器，谷值电压保持器，中心电压发生器，监视器和检测器。峰值电压保持器保持基于耦合到开关元件的电感器的端子处的电压的振荡信号的峰值电压。谷值电压保持器保持振荡信号的谷值电压。中心电压发生器基于峰值电压和谷值电压产生中心电压。监视器监视终端电压的当前值。检测器检测从监视的端子电压的当前值已经低于中心电压的定时，作为谷值定时检测经过了预定延迟时间的定时。

8. 发明申请

WO2014188307A1 SYSTEM AND METHOD FOR DYNAMIC TUNING FEEDBACK CONTROL FOR RANDOM NUMBER GENERATOR 审中-公开
标题翻译：用于随机数发生器的动态调谐反馈控制的系统和方法
公开(公告)号：WO2014188307A1
公开(公告)日：2014-11-27
申请号：PCT/IB2014/061439
申请日：2014-05-14
申请人： ELLIPTIC TECHNOLOGIES INC.
发明人： HAMILTON, Neil, Farquhar , HAMILTON, Scott, Andrew , BORZA, Michael
IPC分类号： G06F7/58 , H03B5/00 , H03L7/00
CPC分类号： G06F7/588
摘要： A random number generator includes a first circuit producing a random sequence of values, the first circuit having an adjustable input that changes the entropy of the random sequence of numbers; a second circuit receiving the random sequence of values from the first circuit and producing an output indicative of the degree of entropy of the random sequence of values, and a third circuit that adjusts the adjustable input of the first circuit in response to the output of the second circuit.
摘要翻译：随机数发生器包括产生随机值序列的第一电路，所述第一电路具有改变所述随机数字序列的熵的可调输入; 接收来自第一电路的值的随机序列并产生指示随机值序列的熵程度的输出的第二电路，以及响应于第一电路的输出而调整第一电路的可调输入的第三电路第二电路。

9. 发明申请

WO2014012180A1 ULTRA LOW PHASE NOISE SIGNAL SOURCE 审中-公开
标题翻译：超低噪声信号源
公开(公告)号：WO2014012180A1
公开(公告)日：2014-01-23
申请号：PCT/CA2013/050525
申请日：2013-07-08
申请人： NANOWAVE TECHNOLOGIES INC.
发明人： NICHOLLS, Charles , William, Tremlett , HAMDANE, Walid
IPC分类号： H03B5/00 , H03L7/24
CPC分类号： H03L7/20 , H03L7/185 , H03L2207/12
摘要： An apparatus and method for providing an output signal. The apparatus comprises an input for receiving a reference signal, an oscillator for providing an output signal, and an offset signal generator for frequency multiplying the reference signal to generate an offset signal that has a plurality of frequency products in a plurality of frequency bands. The apparatus further includes a mixer for mixing the offset signal with the output signal to produce a combined signal, an offset frequency selector for controllably selecting a frequency band of the offset signal, and a difference detector for detecting a difference between the reference signal and the combined signal and for providing a control signal to the oscillator based on the detected difference.
摘要翻译：一种用于提供输出信号的装置和方法。该装置包括用于接收参考信号的输入端，用于提供输出信号的振荡器和用于对参考信号进行倍频的偏移信号发生器，以产生在多个频带中具有多个频率乘积的偏移信号。该装置还包括：混合器，用于将偏移信号与输出信号混合以产生组合信号;偏移频率选择器，用于可控地选择偏移信号的频带;以及差分检测器，用于检测参考信号和并且用于基于检测到的差异向振荡器提供控制信号。

10. 发明申请

WO2007059364A3 SPREAD SPECTRUM CLOCK FOR USB 审中-公开
标题翻译：用于USB的扩展频谱时钟
公开(公告)号：WO2007059364A3
公开(公告)日：2008-05-29
申请号：PCT/US2006060111
申请日：2006-10-20
申请人： CYPRESS SEMICONDUCTOR CORP , SARTORE RONALD H , WILLIAMS TIMOTHY J
发明人： SARTORE RONALD H , WILLIAMS TIMOTHY J
IPC分类号： H03B5/00
CPC分类号： G06F1/04
摘要： A method, apparatus or system for generating a clock signal that includes determining a transmission frequency within a first frequency range for receiving or transmitting a data stream, locking a clock to the transmission frequency during a packet exchange and tuning the clock to one or more frequencies within a second frequency range after the packet exchange. The clock may be variably tuned to multiple frequencies within either the first or second range.
摘要翻译：一种用于产生时钟信号的方法，装置或系统，其包括确定用于接收或发送数据流的第一频率范围内的传输频率，在分组交换期间将时钟锁定到传输频率并将时钟调谐到一个或多个频率在分组交换之后的第二频率范围内。时钟可以在第一或第二范围内可变地调谐到多个频率。

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