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公开(公告)号：US20160268971A1
公开(公告)日：2016-09-15
申请号：US15067280
申请日：2016-03-11
IPC分类号： H03B5/36 , H03K19/0175
CPC分类号： H03B5/364 , H03B5/06 , H03B5/12 , H03B5/30 , H03B5/32 , H03B2200/0094 , H03K19/017509
摘要： An oscillator circuit with an oscillator stage and a first current source arranged to drive the oscillator stage is presented. The oscillator stage has an oscillator stage input terminal, an oscillator stage output terminal, an oscillator arranged to provide an oscillating signal between the oscillator stage input terminal and the oscillator stage output terminal. The oscillator circuit has an operational amplifier with an inverting input, a non-inverting input and an operational amplifier output. The oscillator stage input terminal and the oscillator stage output terminal are coupled to the inverting input and non-inverting input. The operational amplifier output is coupled to the oscillator stage input terminal such that the oscillator stage input terminal and the oscillator stage output terminal are controlled to have a same DC voltage level.
摘要翻译： 提出了具有振荡器级和布置成驱动振荡器级的第一电流源的振荡器电路。 振荡器级具有振荡器级输入端子，振荡器级输出端子，振荡器，用于在振荡级输入端子和振荡级输出端子之间提供振荡信号。 振荡器电路具有运算放大器，具有反相输入，非反相输入和运算放大器输出。 振荡器级输入端子和振荡器级输出端子耦合到反相输入和非反相输入。 运算放大器输出耦合到振荡器级输入端子，使得振荡器级输入端子和振荡器级输出端子被控制为具有相同的直流电压电平。
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公开(公告)号：US09369085B1
公开(公告)日：2016-06-14
申请号：US14836727
申请日：2015-08-26
申请人： NXP B.V.
发明人： Frank Leong , Yuan Gao , Robert Bogdan Staszewski
CPC分类号： H03B5/1212 , H03B5/06 , H03B5/1225 , H03B5/1228 , H03B5/1262 , H03B5/1268 , H03B2200/0094 , H03B2200/0096
摘要： In an example embodiment, an apparatus includes an LC circuit having a capacitive circuit and an inductive circuit connected in a circuit loop. The inductive circuit includes one or more inductive elements and a switching circuit. In a first mode, the switching circuit provides a direct-current charge voltage across the LC circuit and prevents oscillation of energy between the capacitive circuit and the inductive circuit by opening a switch in the circuit loop of the LC circuit. In a second mode, the switching circuit enables oscillation of energy between the capacitive circuit and the inductive circuit by closing the switch in the circuit loop.
摘要翻译： 在示例性实施例中，一种装置包括具有电容电路的LC电路和以电路回路连接的感应电路。 感应电路包括一个或多个电感元件和开关电路。 在第一模式中，开关电路在LC电路两端提供直流充电电压，并通过打开LC电路的电路回路中的开关来防止电容电路和感应电路之间的能量振荡。 在第二模式中，开关电路通过闭合电路回路中的开关来实现电容电路和感应电路之间的能量的振荡。
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公开(公告)号：US09356557B1
公开(公告)日：2016-05-31
申请号：US14836759
申请日：2015-08-26
申请人： NXP B.V.
发明人： Yuan Gao , Frank Leong , Robert Bogdan Staszewski
CPC分类号： H03B5/1228 , H03B5/06 , H03B5/1212 , H03B5/1265 , H03B5/1268 , H03B2200/0094 , H03B2201/011 , H03B2201/012 , H03B2201/0266 , H03J3/20 , H03J2200/10 , H03J2200/15 , H03L3/00
摘要： In an example embodiment, an apparatus includes an LC circuit having a capacitive circuit and an inductive circuit connected in a circuit loop. In a first mode, a switching circuit in the inductive circuit provides a charge voltage across the LC circuit and prevents oscillation of the LC circuit by opening a switch in the circuit loop. In a second mode, the switching circuit enables the oscillation of the LC circuit by closing the switch in the circuit loop. The adjustable capacitive circuit includes capacitive branch circuits configured to contribute a first amount of capacitance when enabled. For each capacitive branch circuit, an initialization circuit couples the set of capacitors to a respective reference voltage in response to the capacitive branch circuit being disabled and the switching circuit operating in the first mode.
摘要翻译： 在示例性实施例中，一种装置包括具有电容电路的LC电路和以电路回路连接的感应电路。 在第一模式中，感应电路中的开关电路在LC电路两端提供充电电压，并通过打开电路回路中的开关来防止LC电路的振荡。 在第二模式中，开关电路通过闭合电路回路中的开关来实现LC电路的振荡。 可调电容电路包括被配置为在使能时贡献第一电容量的电容性分支电路。 对于每个电容分支电路，初始化电路响应于电容性分支电路被禁用并且开关电路以第一模式工作，将该组电容器耦合到相应的参考电压。
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公开(公告)号：US20160072438A1
公开(公告)日：2016-03-10
申请号：US14483128
申请日：2014-09-10
申请人： GainSpan Corporation
发明人： Kiyoshi FUKAHORI
IPC分类号： H03B5/36
CPC分类号： H03B5/364 , H03B5/06 , H03B2200/0094
摘要： A dynamic gearshifting system includes a monitoring device configured to monitor a duty cycle of a clock output signal of a crystal oscillator circuit during oscillation buildup upon power-up of the crystal oscillator circuit. The dynamic gearshifting system also includes a detecting device configured to detect whether the duty cycle of the clock output signal of the crystal oscillator circuit meets a duty cycle threshold value. The dynamic gearshifting system may further include an assertion device configured to assert a control signal based on detecting the duty cycle meets the duty cycle threshold value. The asserted control signal configured to dynamically adjust a transconductance of the crystal oscillator circuit.
摘要翻译： 动态变速系统包括监控装置，其被配置为在晶体振荡器电路上电时在振荡期间监视晶体振荡器电路的时钟输出信号的占空比。 动态变速系统还包括检测装置，其被配置为检测晶体振荡器电路的时钟输出信号的占空比是否满足占空比阈值。 动态变速系统还可以包括被配置为基于检测占空比来满足占空比阈值来断言控制信号的断言装置。 被确定的控制信号被配置为动态地调节晶体振荡器电路的跨导。
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公开(公告)号：US20160003877A1
公开(公告)日：2016-01-07
申请号：US14734175
申请日：2015-06-09
申请人： FUJITSU LIMITED
发明人： Masakazu Kishi , Masaru ITOH , Masayuki ITOH
摘要： A crystal unit includes: a crystal piece; an excitation electrode configured to excite the crystal piece; a case configured to accommodate the crystal piece; an external electrode formed in the case and configured to be electrically connected to the excitation electrode; and an antenna formed in the case and configured to be electrically connected to the external electrode.
摘要翻译： 晶体单元包括：晶片; 激励电极，其被配置为激发所述晶体片; 被配置为容纳所述水晶片的壳体; 外部电极，形成在壳体中并被构造成电连接到激励电极; 以及形成在壳体中并且被配置为电连接到外部电极的天线。
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公开(公告)号：US20150249429A1
公开(公告)日：2015-09-03
申请号：US14633336
申请日：2015-02-27
申请人： SHIMADZU CORPORATION
发明人： Toshiya HABU
CPC分类号： H05H1/46 , H03B5/06 , H03B5/1218 , H03B5/1228 , H03B5/1296 , H03B2200/0094 , H03L3/00 , H05H1/24 , H05H1/30 , H05H1/36 , H05H2001/4652 , H05H2001/4682
摘要： PROBLEM: To generate a self-oscillation in a stable manner and at a low cost in a self-oscillating radio frequency oscillation circuit for high-power applications used for plasma generation in an ICP emission spectrometer or for other purposes.SOLUTION: A secondary winding 38 of a starting transformer is arranged in an LC resonance circuit 30 including an induction coil 9, capacitor 36 and other elements. A starter 6, e.g. a Clapp oscillator circuit, is connected to a primary winding 5 magnetically coupled with the winding 38. A radio-frequency current is induced in the LC resonance circuit 30 through the primary and secondary windings 5 and 38 by energizing the starter 6 for a certain period of time in a starting phase. As a result, electric current flows through the secondary windings 11, 14, 17 and 20 in a full-bridge drive circuit 10 which are magnetically coupled with primary windings 32, 33, 34 and 35, respectively, whereby voltage is developed between the gate and source of MOSFETs 13, 16, 19 and 22, causing these MOSFETs 13, 16, 19 and 22 to begin an ON/OFF operation, whereby the self-oscillation is started.
摘要翻译： 问题：在ICP发射光谱仪中用于等离子体生成的大功率应用的自振荡射频振荡电路中，以稳定的方式和低成本地产生自振荡，或用于其它目的。 解决方案：起动变压器的次级绕组38布置在包括感应线圈9，电容器36和其它元件的LC谐振电路30中。 起动器6，例如。 Clap振荡器电路连接到与绕组38磁耦合的初级绕组5.通过使起动器6通电一定时间，在LC谐振电路30中通过初级和次级绕组5和38感应出射频电流 的时间在开始阶段。 结果，电流分别在与初级绕组32,33,34和35磁耦合的全桥驱动电路10中流过次级绕组11,14,17和20，从而在栅极之间产生电压 和MOSFET 13,16,19,22的源极，使得这些MOSFET 13,16,19,22开始导通/截止操作，从而开始自振荡。
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公开(公告)号：US20150226556A1
公开(公告)日：2015-08-13
申请号：US14618006
申请日：2015-02-10
发明人： Lasse AALTONEN
IPC分类号： G01C19/5712
CPC分类号： G01C19/5712 , G01C19/5776 , H03B5/06 , H03H7/002 , H03H7/0153 , H03H2007/008 , H03L7/0805 , H03L7/099
摘要： A drive loop circuit for a MEMS resonator. The circuit comprises a closed loop circuit to detect and amplify a signal of the MEMS resonator, a phase shifting circuit to phase shift the detected and amplified signal, and a feedback circuit to feed the detected, amplified and phase shifted signal as a feedback signal back to the MEMS resonator. The phase shifting circuit can include a low pass filter of at least 2nd order.
摘要翻译： 用于MEMS谐振器的驱动环路电路。 该电路包括用于检测和放大MEMS谐振器的信号的闭环电路，用于相移移动检测和放大的信号的相移电路和反馈电路，以将检测到的，放大的和相移的信号作为反馈信号反馈 到MEMS谐振器。 相移电路可以包括至少二阶的低通滤波器。
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18.发明授权Method and system to improve power utilization using a calibrated crystal warm-up detection 有权使用校准的水晶预热检测来提高功率利用的方法和系统公开(公告)号：US08917147B2
公开(公告)日：2014-12-23
申请号：US13715057
申请日：2012-12-14
申请人： Broadcom Corporation
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。
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公开(公告)号：US08890632B2
公开(公告)日：2014-11-18
申请号：US11951085
申请日：2007-12-05
申请人： Hisahiko Yoshinaga
发明人： Hisahiko Yoshinaga
CPC分类号： H03B5/364 , H03B5/06 , H03B2200/0012 , H03B2200/0046 , H03B2200/0094
摘要： This invention is directed to achieve the oscillator circuit with a shorter oscillation stabilizing period and a lower consumption of the electric current. The oscillator circuit 10 has the amplifier circuit (inverter circuit 11), and the clock signal CLK is outputted from the output terminal of the inverter circuit 11. The inverter circuit 11 is configured from the first inverter 12 and the second inverter 13. The inverter circuit 11 is connected to the control circuit 30 and the control signal Ctrl controls the driving capacity of the inverter circuit 11. For example, high level control signals Ctrl 1 (H) and Ctrl 2 (H) are supplied to the first and the second inverters 12, 13 for a certain period of time right after the oscillator circuit 10 starts its operation until the oscillation is stabilized, operating both inverters. Then, either the first inverter 12 or the second inverter 13 continues its operation and the other inverter stops the operation.
摘要翻译： 本发明旨在实现振荡电路的振荡稳定时间较短，电流消耗较少。 振荡电路10具有放大电路（逆变器电路11），时钟信号CLK从逆变器电路11的输出端子输出。逆变器电路11由第一反相器12和第二反相器13构成。 电路11连接到控制电路30，控制信号Ctrl控制逆变器电路11的驱动能力。例如，高电平控制信号Ctrl 1（H）和Ctrl 2（H）被提供给第一和第二 逆变器12,13在振荡电路10开始运行直到振荡稳定之后的一定时间段内操作两个逆变器。 然后，第一逆变器12或第二逆变器13继续其操作，而另一个逆变器停止操作。
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20.发明授权Microelectromechanical-based oscillators having adjustable gain amplifiers therein that support Q-factor control 有权其中具有可调增益放大器的微机电振荡器，其支持Q因子控制公开(公告)号：US08803622B1
公开(公告)日：2014-08-12
申请号：US13629732
申请日：2012-09-28
发明人： Minhui Yan , Chien-Chen Chen , Harmeet Bhugra
IPC分类号： H03B5/36
摘要： Oscillator circuits include a MEMs resonator, a variable impedance circuit (e.g., varistor) and an adjustable gain amplifier. The variable impedance circuit includes a first terminal electrically coupled to a first terminal of the MEMs resonator and the adjustable gain amplifier is electrically coupled to the variable impedance circuit. The adjustable gain amplifier may have an input terminal electrically coupled to the variable impedance circuit and a second terminal of the MEMs resonator may receive, as feedback, a signal derived from an output of the adjustable gain amplifier. A Q-factor control circuit may be provided, which is configured to drive the variable impedance circuit and the adjustable gain amplifier with first and second control signals, respectively, that cause an impedance of the variable impedance circuit and a gain of the adjustable gain amplifier to be relatively high during a start-up time interval and relatively low during a post start-up time interval.
摘要翻译： 振荡器电路包括MEM谐振器，可变阻抗电路（例如，变阻器）和可调增益放大器。 可变阻抗电路包括电耦合到MEM谐振器的第一端子的第一端子，并且可调增益放大器电耦合到可变阻抗电路。 可调增益放大器可以具有电耦合到可变阻抗电路的输入端子，并且MEM谐振器的第二端子可以接收从可调增益放大器的输出导出的信号作为反馈。 可以提供Q因子控制电路，其被配置为分别引起可变阻抗电路的阻抗和可调增益放大器的增益的第一和第二控制信号驱动可变阻抗电路和可调增益放大器 在启动时间间隔期间相对较高，并且在后启动时间间隔期间相对较低。
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