公开(公告)号：US20150137895A1

公开(公告)日：2015-05-21

申请号：US14479269

申请日：2014-09-05

Applicant: California Institute of Technology

Inventor： Mayank Raj ,  Azita Emami

IPC: H03L7/099

CPC classification number: H03K3/0315 ,  H03B27/00 ,  H03B2201/038 ,  H03L7/0995 ,  H03L7/24

Abstract: Technologies are generally described for quadrature-based injection-locking of ring oscillators. In some examples, an external signal may be injected into a ring oscillator. Phase signals may be measured from within the ring oscillator and used to determine a mean quadrature error (MQE) that characterizes the difference in frequency between the external signal and the ring oscillator's natural frequency. A control signal may then be generated from the MQE and used to adjust the ring oscillator natural frequency to reduce the difference between the ring oscillator natural frequency and the external signal.

Abstract translation: 技术通常被描述为用于环形振荡器的正交注入锁定。 在一些示例中，外部信号可以被注入到环形振荡器中。 相位信号可以从环形振荡器内测量，并用于确定表征外部信号和环形振荡器固有频率之间的频率差的均方根误差（MQE）。 然后可以从MQE生成控制信号，并用于调整环形振荡器固有频率以减小环形振荡器固有频率与外部信号之间的差异。

公开(公告)号：US20120119836A1

公开(公告)日：2012-05-17

申请号：US13236608

申请日：2011-09-19

Applicant: Michael M. Green ,  Xiaoyan Gui

Inventor： Michael M. Green ,  Xiaoyan Gui

IPC: H03K3/03

CPC classification number: H03K3/0322 ,  H03B5/04 ,  H03B27/00 ,  H03B2201/038 ,  H03B2202/042 ,  H03K3/011 ,  H03L1/00

Abstract: High-speed CMOS ring voltage controlled oscillators with low supply sensitivity have been disclosed. According to one embodiment, a CML ring oscillator comprises a CML negative impedance compensation circuit comprising two cross coupled transistors and a resistor connected to the two transistors for resistive biasing and a CML interpolating delay cell connected in parallel with the CML negative impedance compensation. An impedance change of the CML negative impedance compensation due to supply variation counteracts an impedance change of the CML interpolating delay cell.

Abstract translation: 已经公开了具有低供应灵敏度的高速CMOS环形电压控制振荡器。 根据一个实施例，CML环形振荡器包括CML负阻抗补偿电路，其包括两个交叉耦合晶体管和连接到两个用于电阻偏置的晶体管的电阻器以及与CML负阻抗补偿并联连接的CML内插延迟单元。 由于电源变化引起的CML负阻抗补偿的阻抗变化抵消了CML内插延迟单元的阻抗变化。

公开(公告)号：US08159308B1

公开(公告)日：2012-04-17

申请号：US12763027

申请日：2010-04-19

Applicant: Sehat Sutardja

Inventor： Sehat Sutardja

IPC: H03B5/18

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1278 ,  H03B5/129 ,  H03B2200/0062 ,  H03B2201/031 ,  H03B2201/038 ,  H03L5/00

Abstract: An apparatus includes a tank circuit of a voltage controlled oscillator (VCO). A pair of alternating current (AC) coupling capacitors couple the gates of the pair of transistors to the drains of the pair of transistors. A bias circuit is coupled to the gates of the pair of transistors to bias the pair of transistors such that the pair of transistors alternatingly turn on during a plurality of peaks of an oscillating signal of the tank circuit and the pair of transistors turn off during a plurality of crossing points of the oscillating signal. A feedback loop may be configured to detect a peak oscillating amplitude of the oscillating signal and adjust a bias voltage of the bias circuit. Also, a supply capacitor may be coupled to the tank circuit and to the pair of transistors to provide an instantaneous current to the VCO.

Abstract translation: 一种装置包括压控振荡器（VCO）的振荡电路。 一对交流（AC）耦合电容器将该对晶体管的栅极耦合到该对晶体管的漏极。 偏置电路耦合到该对晶体管的栅极，以偏置该对晶体管，使得该对晶体管在该多个峰值期间在该振荡电路的振荡信号的峰值期间交替导通，并且一对晶体管在一 多个交叉点的振荡信号。 反馈回路可以被配置为检测振荡信号的峰值振荡幅度并调整偏置电路的偏置电压。 此外，电源电容器可以耦合到储能电路和一对晶体管，以向VCO提供瞬时电流。

公开(公告)号：US20100264994A1

公开(公告)日：2010-10-21

申请号：US12743177

申请日：2008-11-07

Applicant: David L. Duperray

Inventor： David L. Duperray

IPC: H03B5/12

CPC classification number: H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1278 ,  H03B5/129 ,  H03B2201/038

Abstract: An LC oscillator is provided that achieves improved phase noise performance. A variable frequency oscillator includes a variable supply source (I), an oscillator tank circuit (T), a variable capacitance circuit (VC1) comprising MOS switches, and an oscillator tank voltage common mode adjustment circuit (R). When the capacitance of the variable capacitance circuit is varied to vary an output frequency of the variable frequency oscillator, the common mode voltage is adjusted to reduce transitions of the MOS switches between an inversion state and a depletion state during excursions of an output signal through one cycle of oscillation.

Abstract translation: 提供了一种可提高相位噪声性能的LC振荡器。 可变频率振荡器包括可变电源（I），振荡器电路（T），包括MOS开关的可变电容电路（VC1）和振荡器电压共模调整电路（R）。 当可变电容电路的电容改变以改变可变频率振荡器的输出频率时，调节共模电压以减少输出信号通过一个的偏移期间在反转状态和耗尽状态之间的MOS开关的转变 振荡周期。

公开(公告)号：US3855550A

公开(公告)日：1974-12-17

申请号：US39141773

申请日：1973-08-24

Applicant: RCA CORP

Inventor： CARLSON D

IPC: H03B5/04 ,  H03B1/00 ,  H03B5/18 ,  H03B3/02 ,  H03B5/12

CPC classification number: H03B5/1805 ,  H03B2201/031 ,  H03B2201/038

Abstract: A voltage-dependent capacitor tuned oscillator employs a diode as a coupling element between an amplifying device and a resonant circuit to provide a feedback signal to the amplifying device required to sustain oscillations. The diode further provides charging current for a capacitor in the resonant circuit when a first polarity portion of the oscillations increase above a predetermined level. The charge on the capacitor decreases the feedback level, thus stabilizing the level of oscillations in the resonant circuit for each frequency to which the oscillator is tuned.

Abstract translation: 电压相关的电容调谐振荡器使用二极管作为放大器件和谐振电路之间的耦合元件，以向保持振荡所需的放大器件提供反馈信号。 当振荡的第一极性部分增加到高于预定电平时，二极管进一步向谐振电路中的电容器提供充电电流。 电容器上的电荷会降低反馈电平，从而稳定振荡器调谐的每个频率的谐振电路中的振荡电平。