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31. 发明授权

US09401724B1 Frequency synthesizers with amplitude control 有权
标题翻译：频率合成器具有幅度控制
公开(公告)号：US09401724B1
公开(公告)日：2016-07-26
申请号：US14836823
申请日：2015-08-26
申请人： NXP B.V.
发明人： Yuan Gao , Frank Leong , Robert Bogdan Staszewski
IPC分类号： H03B5/08 , H03L7/18 , H03B7/06 , H03L7/099 , H03B5/06 , H03B1/00
CPC分类号： H03L7/18 , H03B1/00 , H03B5/06 , H03B5/08 , H03B5/1212 , H03B5/1228 , H03B5/1243 , H03B2200/004 , H03B2200/0076 , H03B2200/0094 , H03L3/00 , H03L5/00 , H03L7/099 , H03L2207/50
摘要： A frequency synthesizer device provides amplitude control. Using switch circuit operating in a first mode, a charge voltage is applied to an oscillator circuit that an inductive-capacitive (LC) tank circuit. The LC tank circuit has a capacitive element, and an inductive element that is connected to the capacitive element. Using the switch circuit operating in a second mode, the LC tank circuit is enabled to oscillate. Using driver circuits that are response to a voltage applied to the tank circuit, current is reinforced in the LC tank, and the reinforcement is based upon a transconductance gain of the driver circuits. Using a calibration circuit, an amplitude of an output signal from the oscillator circuit is detected. In response to the detected amplitude, the transconductance gain is adjusted by enabling or disabling auxiliary circuits from plurality of auxiliary circuits.
摘要翻译：频率合成器装置提供幅度控制。使用在第一模式下操作的开关电路，将充电电压施加到电感 - 电容（LC）电路的振荡器电路。 LC槽电路具有电容元件和连接到电容元件的电感元件。使用在第二模式下操作的开关电路，LC振荡电路能够振荡。使用响应于施加到储能电路的电压的驱动电路，LC箱中的电流被增强，并且加强是基于驱动电路的跨导增益。使用校准电路，检测来自振荡电路的输出信号的振幅。响应于检测到的幅度，通过启用或禁用来自多个辅助电路的辅助电路来调节跨导增益。

32. 发明授权

US09300249B2 Differential crystal oscillator circuit 有权
标题翻译：差分晶振电路
公开(公告)号：US09300249B2
公开(公告)日：2016-03-29
申请号：US14338241
申请日：2014-07-22
申请人： QUALCOMM Incorporated
发明人： Yashar Rajavi , Amirpouya Kavousian , Alireza Khalili , Mohammad Bagher Vahid Far , Abbas Komijani
IPC分类号： H03B5/32 , H03B5/36
CPC分类号： H03B5/364 , H03B5/06 , H03B5/36 , H03B2200/004 , H03B2200/0094
摘要： A differential crystal oscillator circuit, including: first and second output terminals; a cross-coupled oscillation unit including first and second transistors cross-coupled to the first and second output terminals; first and second metal-oxide semiconductor field-effect transistor (MOSFET) diodes, each MOSFET diode including a resistor connected between gate and drain terminals, wherein the first MOSFET diode couples to the first transistor to provide low-impedance load at low frequencies and high-impedance load at higher frequencies to the first transistor, wherein the second MOSFET diode couples to the second transistor to provide low-impedance load at low frequencies and high-impedance load at higher frequencies to the second transistor; and a reference resonator coupled between the first and second output terminals to establish an oscillation frequency.
摘要翻译：一种差分晶体振荡器电路，包括：第一和第二输出端子; 交叉耦合振荡单元，包括交叉耦合到第一和第二输出端的第一和第二晶体管; 第一和第二金属氧化物半导体场效应晶体管（MOSFET）二极管，每个MOSFET二极管包括连接在栅极和漏极端子之间的电阻器，其中第一MOSFET二极管耦合到第一晶体管以在低频和高电平下提供低阻抗负载在第一晶体管的较高频率处的阻抗负载，其中所述第二MOSFET二极管耦合到所述第二晶体管，以在低频处提供低阻抗负载，并以较高频率向所述第二晶体管提供高阻抗负载; 以及耦合在第一和第二输出端子之间以建立振荡频率的参考谐振器。

33. 发明授权

US09172327B2 Crystal oscillator circuit having low power consumption, low jitter and wide operating range 有权
标题翻译：晶振电路功耗低，抖动小，工作范围宽
公开(公告)号：US09172327B2
公开(公告)日：2015-10-27
申请号：US14081044
申请日：2013-11-15
申请人： CAPITAL MICROELECTRONICS CO., LTD.
发明人： Rifeng Mai
IPC分类号： H03B5/36
CPC分类号： H03B5/364 , H03B5/06 , H03B2200/0094
摘要： A crystal oscillator circuit includes: a crystal resonator circuit, generating an oscillation signal; an inverting amplification circuit, whose amplifier input end is coupled to receive the oscillation signal, in which an inverting amplifier outputs an inverting amplified output signal; a bias circuit, having a bias circuit input end and a bias circuit output end, in which the bias circuit output end generates a bias circuit output signal controlled by the bias circuit input end, and the bias circuit output signal is coupled to a second control end of the inverting amplification circuit; and a peak detection circuit, comparing the inverting amplified output signal with a reference signal, regulating a peak detector output signal, and feeding the peak detector output signal into the bias circuit input end.
摘要翻译：晶体振荡器电路包括：晶体谐振器电路，产生振荡信号; 反相放大电路，其放大器输入端耦合以接收振荡信号，其中反相放大器输出反相放大的输出信号; 偏置电路，具有偏置电路输入端和偏置电路输出端，其中偏置电路输出端产生由偏置电路输入端控制的偏置电路输出信号，偏置电路输出信号耦合到第二控制端反相放大电路; 以及峰值检测电路，将反相放大的输出信号与参考信号进行比较，调节峰值检测器输出信号，并将峰值检测器输出信号馈送到偏置电路输入端。

34. 发明授权

US09118334B2 System and method for improved MEMS oscillator startup 有权
标题翻译：改进MEMS振荡器启动的系统和方法
公开(公告)号：US09118334B2
公开(公告)日：2015-08-25
申请号：US13839079
申请日：2013-03-15
申请人： Mark E. Schlarmann , Deyou Fang , Keith L. Kraver
发明人： Mark E. Schlarmann , Deyou Fang , Keith L. Kraver
IPC分类号： H03B5/30 , H03L3/00
CPC分类号： H03L3/00 , H03B5/30 , H03B2200/0094
摘要： A MEMS resonator system comprises a MEMS resonator, kick start circuitry, feedback circuitry, an oscillator, and a switch. The MEMS resonator system is configured to provide a pulsed kick-start signal having a frequency and period such that energy delivered to the MEMS resonator is optimized in a short period of time, resulting is reduced oscillator startup time. The MEMS resonator system is configured to switch out the kick-start signal when the MEMS resonator oscillation has been achieved, and switch in feedback circuitry to maintain the MEMS resonator in a state of oscillation.
摘要翻译： MEMS谐振器系统包括MEMS谐振器，脚踏启动电路，反馈电路，振荡器和开关。 MEMS谐振器系统被配置为提供具有频率和周期的脉冲启动信号，使得在短时间内优化输送到MEMS谐振器的能量，从而减少振荡器启动时间。 MEMS谐振器系统被配置为当已经实现MEMS谐振器振荡时切换启动信号，并且切换反馈电路以将MEMS谐振器保持在振荡状态。

35. 发明申请

US20150090034A1 METHOD OF REDUCING GYROSCOPE OSCILLATOR START-UP TIME AND DEVICE THEREFOR 有权
标题翻译：减少陀螺振荡器启动时间的方法及其设备
公开(公告)号：US20150090034A1
公开(公告)日：2015-04-02
申请号：US14497317
申请日：2014-09-25
申请人： mCube Inc.
发明人： WENHUA ZHANG
IPC分类号： B81B7/00 , B81B7/02 , G01C19/56
CPC分类号： G01C19/5776 , B81B2201/0242 , H03B2200/0094
摘要： A gyroscope device and method of operation therefor. The gyroscope device can include a power input, a charge pump portion coupled to the power input, a selection mechanism, a switching mechanism, an oscillator driving mechanism coupled to the switching mechanism, and an oscillator coupled to the charge pump portion and to the oscillator driving mechanism. The method of operation can include providing a first or second selection signal from a selection mechanism associated with the outputting of a DC input power or DC output power from a switching mechanism, respectively. These signals, along with an oscillator driving signal from an oscillator driving mechanism, can be used to initiate and maintain oscillation of an oscillator at a steady-state frequency within a predetermined range of frequencies.
摘要翻译：陀螺仪装置及其操作方法。陀螺仪装置可以包括功率输入，耦合到功率输入的电荷泵部分，选择机构，开关机构，耦合到开关机构的振荡器驱动机构，以及耦合到电荷泵部分和振荡器驱动机制。操作方法可以包括分别从与切换机构输出DC输入功率或DC输出功率相关的选择机构提供第一或第二选择信号。这些信号以及来自振荡器驱动机构的振荡器驱动信号可以用于启动并保持在预定频率范围内的稳态频率的振荡器的振荡。

36. 发明申请

US20140354364A1 OSCILLATOR WITH STARTUP CIRCUITRY 有权
标题翻译：振荡器与启动电路
公开(公告)号：US20140354364A1
公开(公告)日：2014-12-04
申请号：US13907068
申请日：2013-05-31
申请人： Gilles J. Muller , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Gilles J. Muller , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： H03L7/06
CPC分类号： H03L7/06 , H03B5/06 , H03B2200/0094 , H03K3/014 , H03K3/0231 , H03L1/02 , H03L3/00 , H03L5/00
摘要： An oscillator that includes a first source current leg and first sink current leg to source current and sink current, respectively, during a startup mode of oscillator operation. The oscillator includes a second source current leg and a second sink current leg to source current and sink current, respectively, during a second mode of oscillator operation.
摘要翻译：振荡器，其包括在振荡器操作的启动模式期间分别源电流和吸收电流的第一源电流支路和第一汇流电流支路。振荡器包括第二源极电流支路和第二吸收电流支路，以分别在第二振荡器操作模式期间分别提供电流和吸收电流。

37. 发明申请

US20140320223A1 SEMICONDUCTOR APPARATUS, OSCILLATION CIRCUIT, AND SIGNAL PROCESSING SYSTEM 有权
标题翻译：半导体器件，振荡电路和信号处理系统
公开(公告)号：US20140320223A1
公开(公告)日：2014-10-30
申请号：US14248658
申请日：2014-04-09
申请人： RENESAS ELECTRONICS CORPORATION
发明人： Osamu OZAWA , Soshiro NISHIOKA
IPC分类号： H03B5/36 , H01L41/09
CPC分类号： H03B5/364 , H03B5/366 , H03B2200/0082 , H03B2200/0094 , H03B2201/0266
摘要： A semiconductor apparatus includes: first and second external terminals that are connected to respective both ends of an piezoelectric vibrator, in which the piezoelectric vibrator is externally disposed; an inverting amplifier that is disposed between the first and second external terminals; a feedback resistance that feeds back an output of the inverting amplifier to an input of the inverting amplifier; a first capacitative element that is disposed between the first external terminal and a reference voltage terminal; a first resistive element that is disposed in series with the first capacitative element; a second capacitative element that is disposed between the second external terminal and the reference voltage terminal; and a second resistive element that is disposed in series with the second capacitative element.
摘要翻译：半导体装置包括：第一和第二外部端子，其连接到压电振动器的相应的两端，其中压电振动器在外部布置; 反相放大器，设置在第一和第二外部端子之间; 将反相放大器的输出反馈到反相放大器的输入的反馈电阻; 第一电容元件，设置在第一外部端子和参考电压端子之间; 与第一电容元件串联布置的第一电阻元件; 第二电容元件，设置在第二外部端子和参考电压端子之间; 以及与第二电容元件串联布置的第二电阻元件。

38. 发明申请

US20140167866A1 Method and System to Improve Power Utilization Using a Calibrated Crystal Warm-Up Detection 有权
标题翻译：使用校准水晶预热检测提高功率利用率的方法和系统
公开(公告)号：US20140167866A1
公开(公告)日：2014-06-19
申请号：US13715057
申请日：2012-12-14
申请人： BROADCOM CORPORATION
发明人： Praveen VASISHTHA , Satyaprasad SRINIVAS
IPC分类号： G01R35/00
CPC分类号： G01R35/005 , H03B5/06 , H03B5/36 , H03B2200/0094 , H03L1/025
摘要： A calibrated crystal warm-up method that can include determining the number of clock cycles of a crystal clock reference signal from a crystal oscillator occur during a single clock cycle of a low-power oscillator. Further, the determination can occur when the crystal oscillator is warmed up. The method can also include comparing a number of clock cycles of the crystal clock reference signal with a previously determined number of clock cycles of the crystal clock reference signal to indicate whether the crystal oscillator is warmed up. Further, the method can include counting the number of clock cycles of a low-power clock reference signal have occurred up until the time it has been determined that the crystal oscillator has been warmed up.
摘要翻译：可以在低功率振荡器的单个时钟周期期间发生校准的晶体预热方法，其中包括确定晶体振荡器的晶体时钟参考信号的时钟周期数。此外，当晶体振荡器被加热时，可以发生确定。该方法还可以包括将晶体时钟参考信号的多个时钟周期与晶体时钟参考信号的预先确定的时钟周期数进行比较，以指示晶体振荡器是否被加热。此外，该方法可以包括对已经发生的低功率时钟参考信号的时钟周期数进行计数，直到确定晶体振荡器已经被加热为止。

39. 发明申请

US20120306584A1 High Amplitude Voltage-Controlled Oscillator with Dynamic Bias Circuit 有权
标题翻译：具有动态偏置电路的高幅度电压控制振荡器
公开(公告)号：US20120306584A1
公开(公告)日：2012-12-06
申请号：US13154314
申请日：2011-06-06
申请人： Zhiheng Cao
发明人： Zhiheng Cao
IPC分类号： H03B5/12
CPC分类号： H03B5/1228 , H03B5/1215 , H03B5/1234 , H03B2200/0038 , H03B2200/0046 , H03B2200/0062 , H03B2200/0082 , H03B2200/0094 , H03L3/00
摘要： According to an exemplary embodiment, a high amplitude oscillation generator includes an LC tank circuit, a gain stage, a dynamic bias circuit, a bias current source, and a dynamic bias circuit receiving a current source feedback voltage and outputting a gain stage bias voltage. The dynamic bias circuit adjusts the gain stage bias voltage in response to a change in the current source feedback voltage after a start up of the LC tank circuit. The dynamic bias circuit thereby increases an amplitude of oscillations produced by the oscillation generator. The dynamic bias circuit can include an error amplifier, the error amplifier generating the gain stage bias voltage responsive to the current source feedback voltage. The current source feedback voltage can change with a voltage drop across the bias current source. The current source feedback voltage can also be received from an output of the oscillation generator.
摘要翻译：根据示例性实施例，高振幅振荡发生器包括LC振荡电路，增益级，动态偏置电路，偏置电流源和接收电流源反馈电压并输出增益级偏置电压的动态偏置电路。动态偏置电路响应于LC电路启动之后的电流源反馈电压的变化来调节增益级偏置电压。因此，动态偏置电路增加了由振荡发生器产生的振荡的振幅。动态偏置电路可以包括误差放大器，误差放大器响应于电流源反馈电压产生增益级偏置电压。电流源反馈电压可以随着偏置电流源上的电压降而改变。电流源反馈电压也可以从振荡发生器的输出接收。

40. 发明申请

US20110037527A1 FAST START-UP CRYSTAL OSCILLATOR 有权
标题翻译：快速启动水晶振荡器
公开(公告)号：US20110037527A1
公开(公告)日：2011-02-17
申请号：US12540367
申请日：2009-08-13
申请人： Aatmesh Shrivastava , Rajesh Yadav , Parvinder Kumar Rana
发明人： Aatmesh Shrivastava , Rajesh Yadav , Parvinder Kumar Rana
IPC分类号： H03B5/30
CPC分类号： H03B5/06 , H03B2200/0094
摘要： An exemplary fast start-up crystal oscillator with reduced start-up time. The exemplary oscillator reduces the start-up time (i.e., the time taken to attain sustained stable oscillations after the power is turned on) by increasing the negative resistance of a circuit. Increasing the negative resistance increases the rate of growth of the oscillations, thereby reducing start-up time. The exemplary crystal oscillator includes a gain stage with negative resistance. A crystal with shunt capacitance is placed in the feedback loop of the gain stage. A buffer is coupled to the gain stage such that it blocks the crystal shunt capacitance from loading the gain stage, effectively increasing the negative resistance of the gain stage. Further, an oscillation detection and control circuit is coupled between the crystal and the gain stage. The oscillation detection and control circuit connects the buffer during start-up, and disconnects the buffer once an oscillation signal attains sustained stable oscillations.
摘要翻译：具有降低启动时间的示例性快速启动晶体振荡器。示例性振荡器通过增加电路的负电阻来减小启动时间（即，在电源接通之后获得持续的稳定振荡所花费的时间）。增加负电阻会增加振荡的增长率，从而减少启动时间。示例性晶体振荡器包括具有负电阻的增益级。具有并联电容的晶体放置在增益级的反馈环路中。缓冲器耦合到增益级，使得其阻止晶体分流电容加载增益级，有效地增加增益级的负电阻。此外，振荡检测和控制电路耦合在晶体和增益级之间。振荡检测和控制电路在启动期间连接缓冲器，一旦振荡信号达到持续的稳定振荡，就断开缓冲器。

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