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1. 发明申请

WO1996030996A1 CIRCUIT FOR MODULATING A CRYSTAL OSCILLATOR WITH VOLTAGE-CONTROLLED (PIN) DIODE 审中-公开
标题翻译：用于调节具有电压控制（PIN）二极管的晶体振荡器的电路
公开(公告)号：WO1996030996A1
公开(公告)日：1996-10-03
申请号：PCT/NL1996000120
申请日：1996-03-22
申请人： INSTITUUT VOOR MILIEU- EN AGRITECHNIEK (IMAG-DLO) , JANSEN, Mannus, Bernardus
发明人： INSTITUUT VOOR MILIEU- EN AGRITECHNIEK (IMAG-DLO)
IPC分类号： H03C03/22
CPC分类号： H03C3/225 , H03B5/364 , H03B5/368 , H03B19/00 , H03B2200/0008 , H03B2200/0056 , H03B2200/0064 , H03B2200/007 , H03B2200/0086
摘要： Circuit for modulating a crystal oscillator, having an overtone crystal, wherein a self-inductance (L1) and a parallel circuit comprising a capacitor (C3) and a diode (D2) in series with a predetermined reference voltage (Uref) are connected in series with the crystal element (X), such that a modulation voltage connected to the junction of the self-inductance (L1) and the parallel circuit including the capacitor (C3) and the diode (D2) results in a large frequency deviation of the oscillator; the diode (D2) is preferably a pin diode.
摘要翻译：用于调制具有泛音晶体的晶体振荡器的电路，其中包括与预定参考电压（Uref）串联的自感（L1）和包括电容器（C3）和二极管（D2）的并联电路串联连接与晶体元件（X）相连接，使得连接到自感（L1）与包括电容器（C3）和二极管（D2）的并联电路的结的调制电压导致振荡器的大的频率偏差 ; 二极管（D2）优选为pin二极管。

2. 发明申请

WO1994014247A1 CIRCUIT FOR GENERATING SIGNALS IN PHASE QUADRATURE AND ASSOCIATED METHOD THEREFOR 审中-公开
标题翻译：用于生成相位信号的信号及相关方法
公开(公告)号：WO1994014247A1
公开(公告)日：1994-06-23
申请号：PCT/US1993010408
申请日：1993-10-29
申请人： MOTOROLA, INC.
发明人： MOTOROLA, INC. , GILLIG, Steven, F.
IPC分类号： H04B01/16
CPC分类号： H03D7/165 , H03B27/00 , H03B2200/0064 , H04B1/408
摘要： A quadrature generator (975, 1075) for generating a pair of pulse trains maintained in perfect phase quadrature with one another. The quadrature generator (975, 1075) includes a feedback control loop for altering the duty cycle of an oscillating signal applied to a master-slave flip-flop pair (450, 650) configured to generate a pair of pulse trains maintained in a relative phase relationship. The feedback control loop controls the duty cycle of the oscillating signal applied to the master-slave flip-flop pair (54, 58) which, in turn, is determinative of the phase relationship between the pulse train pair generated by the master-slave flip-flop pair (54, 58). When the pulse trains generated by the flip-flop pair (450) are beyond phase quadrature, a control signal generated by the feedback control loop alters the duty cycle of the oscillating signal applied to the flip-flop pair (450) to alter the phase relationship between the pulse trains of the pulse train pair.
摘要翻译：一个正交发生器（975,1075），用于产生彼此保持完美相位正交的一对脉冲序列。正交发生器（975,1075）包括用于改变施加到主从触发器对（450,650）的振荡信号的占空比的反馈控制环路，其被配置为产生保持在相对相位中的一对脉冲序列关系。反馈控制环路控制施加到主从触发器对（54,58）的振荡信号的占空比，其又决定由主从触发器产生的脉冲串对之间的相位关系（54,58）。当由触发器对（450）产生的脉冲串超出相位正交时，由反馈控制环路产生的控制信号改变施加到触发器对（450）的振荡信号的占空比，以改变相位脉冲串对的脉冲串之间的关系。

3. 发明申请

WO2015106195A1 A LOW VOLTAGE CRYSTAL OSCILLATOR (XTAL) DRIVER WITH FEEDBACK CONTROLLED DUTY CYCLING FOR ULTRA LOW POWER 审中-公开
标题翻译：低电压振荡器（XTAL）驱动器，具有反馈控制用于超低功耗的占空比
公开(公告)号：WO2015106195A1
公开(公告)日：2015-07-16
申请号：PCT/US2015/011012
申请日：2015-01-12
申请人： UNIVERSITY OF VIRGINIA , CALHOUN, Benton H. , SHRIVASTAVA, Aatmesh
发明人： CALHOUN, Benton H. , SHRIVASTAVA, Aatmesh
IPC分类号： H03B5/36
CPC分类号： H03B5/364 , H03B5/04 , H03B5/32 , H03B2200/0012 , H03B2200/0046 , H03B2200/0064 , H03B2200/0082 , H03L5/00
摘要： A low voltage crystal oscillator (XTAL) driver with feedback controlled duty cycling for ultra low power biases an amplifier for an XTAL in the sub-threshold operating regime. A feedback control scheme can be used to bias the amplifier for an XTAL biased in the sub-threshold operating regime. The amplifier of a XTAL oscillator can be duty cycled to save power, e.g., the XTAL driver can be turned off to save power when the amplitude of the XTAL oscillation reaches a maximum value in range; but be turned back on when the amplitude of the XTAL oscillation starts to decay, to maintain the oscillation before it stops. In addition or alternatively, a feedback control scheme to duty cycle the amplifier of a XTAL oscillator can be used to monitor the amplitude of the oscillation.
摘要翻译：具有反馈控制占空比的低电压晶体振荡器（XTAL）驱动器，用于超低功耗偏置用于子阈值操作状态下XTAL的放大器。可以使用反馈控制方案来偏置放大器以在子阈值操作状态下偏置的XTAL。 XTAL振荡器的放大器可以循环使用以节省功率，例如，当XTAL振荡的幅度达到最大值时，可以关闭XTAL驱动器以节省功率; 但是当XTAL振荡的振幅开始衰减时，重新开启，以便在停止之前保持振荡。另外或替代地，可以使用用于对XTAL振荡器的放大器进行占空比的反馈控制方案来监视振荡的幅度。

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