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244 条记录 (耗时 0.022 秒)

    Oscillator for high-speed serial device
    1.
    发明授权
    Oscillator for high-speed serial device 有权

    公开(公告)号：US12101112B1

    公开(公告)日：2024-09-24

    申请号：US17932707

    申请日：2022-09-16

    申请人： Marvell Asia Pte Ltd

    发明人： Hui Zhao ,  Fei Lu ,  Yuxiang Sun ,  Zhendong Guo ,  Banglong Qian ,  Fang Lv

    IPC分类号： H04B1/40 ,  H03B7/06

    CPC分类号： H04B1/40 ,  H03B7/06 ,  H03B2200/0058

    摘要： Transceiver circuitry for coupling a functional circuit to a transmission medium includes a transmit path for coupling between the functional circuit and the transmission medium, a receive path for coupling between the transmission medium and the functional circuit, and clock generation circuitry coupled to at least one of the transmit path and the receive path. The clock generation circuitry includes an oscillator having transconductance circuitry, a capacitance element coupled in parallel with the transconductance circuitry, a plurality of inductors coupled in parallel with the transconductance circuitry and the capacitance element, and with each other, and a current source coupled to the plurality of inductors. The capacitance element may be variable. An even number of inductors are arranged so that half of the inductors generate magnetic flux in a first direction, and half of the inductors generate magnetic flux in a second direction opposite to the first direction.

    SPIKE TRAIN GENERATING CIRCUIT
    4.
    发明申请
    SPIKE TRAIN GENERATING CIRCUIT 审中-公开

    公开(公告)号：US20170324379A1

    公开(公告)日：2017-11-09

    申请号：US15657996

    申请日：2017-07-24

    申请人： HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    发明人： Suhas Kumar

    IPC分类号： H03B7/06 ,  H03K19/20 ,  H03B5/04

    摘要： An oscillator circuit that includes a voltage source, a resistor, a capacitor, and a nonlinear device. The capacitor and the nonlinear device may be coupled in parallel with one another. The resistor may be coupled in series with the capacitor and the nonlinear device. The voltage source may be coupled in series with the resistor. The voltage source may supply the oscillator circuit with a direct current input signal. The nonlinear device may include an active layer coupled to a first electrode and a second electrode. In response to the direct current input signal, the oscillator circuit may output a spike train including a spike bunch.

    Frequency synthesizers with amplitude control
    5.
    发明授权
    Frequency synthesizers with amplitude control 有权
    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。

    Class-F CMOS oscillator incorporating differential passive network
    6.
    发明授权
    Class-F CMOS oscillator incorporating differential passive network 有权
    带有差分无源网络的F类CMOS振荡器

    公开(公告)号：US09197221B2

    公开(公告)日：2015-11-24

    申请号：US14027635

    申请日：2013-09-16

    申请人： Technische Universiteit Delft

    发明人： Masoud Babaie ,  Robert Bogdan Staszewski

    IPC分类号： H03B5/12 ,  H03L7/00 ,  H03B7/06 ,  H03B1/00 ,  H04B1/10 ,  H04B1/26 ,  H03L7/099

    CPC分类号： H03L7/00 ,  H03B1/00 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1296 ,  H03B7/06 ,  H03L7/099 ,  H04B1/10 ,  H04B1/26

    摘要： A novel and useful oscillator topology demonstrating an improved phase noise performance that exploits the time-variant phase noise model with insights into the phase noise conversion mechanisms. The oscillator is based on enforcing a pseudo-square voltage waveform around an LC tank by increasing the third-harmonic of the fundamental oscillation voltage through an additional impedance peak. Alternatively, the oscillator is based on enforcing clipped oscillation waveform by increasing the second harmonic of the fundamental oscillation voltage through an additional impedance peak. This auxiliary impedance peak is realized by a transformer with moderately coupled resonating windings. As a result, the effective impulse sensitivity function (ISF) decreases thus reducing the oscillator's effective noise factor such that a significant improvement in the oscillator phase noise and power efficiency are achieved.

    摘要翻译： 一种新颖有用的振荡器拓扑，展示了改进的相位噪声性能，利用了相位噪声转换机制的深入了解的时变相位噪声模型。 振荡器基于通过增加基波振荡电压的三次谐波通过附加的阻抗峰值来强制在LC槽周围的伪平方电压波形。 或者，振荡器基于通过附加阻抗峰值增加基波振荡电压的二次谐波来强制削波振荡波形。 该辅助阻抗峰值由具有中等耦合谐振绕组的变压器实现。 结果，有效的脉冲灵敏度函数（ISF）降低，从而减小了振荡器的有效噪声因子，从而实现了振荡器相位噪声和功率效率的显着提高。

    VOLTAGE CONTROLLED OSCILLATOR
    8.
    发明申请
    VOLTAGE CONTROLLED OSCILLATOR 有权
    电压控制振荡器

    公开(公告)号：US20090261876A1

    公开(公告)日：2009-10-22

    申请号：US12107196

    申请日：2008-04-22

    申请人： Jing-Hong Conan Zhan

    发明人： Jing-Hong Conan Zhan

    IPC分类号： H03L7/06 ,  H03B7/06

    CPC分类号： H03L7/099 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/124

    摘要： An embodiment of the voltage controlled oscillator is provided. The oscillator comprises a first inductor set, a second inductor set, a second capacitor, a voltage source and a negative resistance element. The inductance of the second inductor set is k times the inductance of the first inductor set. The voltage source applies an ac voltage to the second inductor set. The negative resistance element is coupled to the second inductor set to provide a negative resistance to resonate the second capacitor at the second inductor set.

    摘要翻译： 提供了压控振荡器的实施例。 振荡器包括第一电感器组，第二电感器组，第二电容器，电压源和负电阻元件。 第二电感器组的电感为第一电感器组的电感的k倍。 电压源对第二电感器组施加交流电压。 负电阻元件耦合到第二电感器组，以提供负电阻以在第二电感器组谐振第二电容器。

    VOLTAGE CONTROLLED OSCILLATOR, AND PLL CIRCUIT AND RADIO COMMUNICATION APPARATUS USING THE SAME
    10.
    发明申请
    VOLTAGE CONTROLLED OSCILLATOR, AND PLL CIRCUIT AND RADIO COMMUNICATION APPARATUS USING THE SAME 有权
    电压控制振荡器和PLL电路和无线电通信装置

    公开(公告)号：US20080204157A1

    公开(公告)日：2008-08-28

    申请号：US12035250

    申请日：2008-02-21

    申请人： Takayuki TSUKIZAWA ,  Koji TAKINAMI

    发明人： Takayuki TSUKIZAWA ,  Koji TAKINAMI

    IPC分类号： H03B7/06

    CPC分类号： H03B5/1228 ,  H03B5/1215 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1293 ,  H03B2201/025 ,  H03J2200/10

    摘要： A voltage controlled oscillator of the present invention comprises a reference voltage generation section 114 for generating a plurality of reference voltage based on a power supply voltage. A first to a third reference voltages Vref1, Vref2, and Vref3 are inputted to a first to a third variable capacitance circuits A, B, and C, respectively, at each one of terminals of each of the first to the third variable capacitance circuits A, B, and C. The first to the third reference voltages Vref1, Vref2, and Vref3 each has a fixed value, and a difference between the first reference voltage Vref1 and the second reference voltage Vref2 and a difference between the second reference voltage Vref2 and the third reference voltage Vref3 represent values different from each other. A control voltage Vt for feedback-controlling an oscillation frequency is inputted to each of the other of the terminals of the variable capacitance element of each of the n variable capacitance circuits such that the control voltage Vt having the same value is inputted to said each of the other of the terminals.

    摘要翻译： 本发明的压控振荡器包括：基准电压产生部分114，用于基于电源电压产生多个参考电压。 第一至第三参考电压Vref 1，Vref 2和Vref 3分别在第一至第三变量中的每个端子的每个端子处输入到第一至第三可变电容电路A，B和C 电容电路A，B和C.第一至第三参考电压Vref 1，Vref 2和Vref 3各自具有固定值，第一参考电压Vref 1和第二参考电压Vref 2之间的差和a 第二参考电压Vref 2和第三参考电压Vref 3之间的差表示彼此不同的值。 将用于反馈控制振荡频率的控制电压Vt输入到n个可变电容电路中的每一个的可变电容元件的另一个端子中，使得具有相同值的控制电压Vt被输入到 另一个终端。