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    • 9. 发明授权
    • RF transmitter with stable on-chip PLL
    • RF发射机具有稳定的片上PLL
    • US08280322B2
    • 2012-10-02
    • US12702198
    • 2010-02-08
    • Alireza ZolfaghariHooman Darabi
    • Alireza ZolfaghariHooman Darabi
    • H03C3/00H04B1/68
    • H03L7/093H03L7/0891H03L7/18
    • A phase locked loop (PLL) a phase detector, a charge pump, a loop filter, a controlled oscillator, and a feedback divider. The phase detector is coupled to produce a difference signal based on a difference between phase of a reference oscillation and phase of a feedback oscillation. The charge pump is coupled to convert the difference signal into an up-signal or a down signal. The loop filter coupled to filter the up signal or the down signal to produce a control signal. The controlled oscillator is coupled to generate an output oscillation based on the control signal. The feedback divider is coupled to generate the feedback oscillation from the output oscillation based on a divider value. The loop filter includes a first resistor-capacitor circuit and a second resistor-capacitor circuit. The first resistor-capacitor circuit is calibrated using a first calibration technique and the second resistor-capacitor circuit is calibrated using a second calibration technique.
    • 锁相环(PLL),相位检测器,电荷泵,环路滤波器,受控振荡器和反馈分压器。 相位检测器被耦合以基于参考振荡的相位与反馈振荡的相位之间的差产生差分信号。 电荷泵被耦合以将差信号转换成上信号或下信号。 该滤波器被耦合以对上行信号或下降信号进行滤波以产生控制信号。 受控振荡器被耦合以基于控制信号产生输出振荡。 反馈分压器被耦合以基于分频器值从输出振荡产生反馈振荡。 环路滤波器包括第一电阻 - 电容电路和第二电阻 - 电容电路。 使用第一校准技术校准第一电阻器电容器电路,并且使用第二校准技术校准第二电阻器电容器电路。
    • 10. 发明申请
    • RF transmitter with stable on-chip PLL
    • RF发射机具有稳定的片上PLL
    • US20090011735A1
    • 2009-01-08
    • US11824663
    • 2007-07-02
    • Alireza ZolfaghariHooman Darabi
    • Alireza ZolfaghariHooman Darabi
    • H04B1/06
    • H03L7/093H03L7/0891H03L7/18
    • A phase locked loop (PLL) a phase detector, a charge pump, a loop filter, a controlled oscillator, and a feedback divider. The phase detector is coupled to produce a difference signal based on a difference between phase of a reference oscillation and phase of a feedback oscillation. The charge pump is coupled to convert the difference signal into an up-signal or a down signal. The loop filter coupled to filter the up signal or the down signal to produce a control signal. The controlled oscillator is coupled to generate an output oscillation based on the control signal. The feedback divider is coupled to generate the feedback oscillation from the output oscillation based on a divider value. The loop filter includes a first resistor-capacitor circuit and a second resistor-capacitor circuit. The first resistor-capacitor circuit is calibrated using a first calibration technique and the second resistor-capacitor circuit is calibrated using a second calibration technique.
    • 锁相环(PLL),相位检测器,电荷泵,环路滤波器,受控振荡器和反馈分压器。 相位检测器被耦合以基于参考振荡的相位与反馈振荡的相位之间的差产生差分信号。 电荷泵被耦合以将差信号转换成上信号或下信号。 该滤波器被耦合以对上行信号或下降信号进行滤波以产生控制信号。 受控振荡器被耦合以基于控制信号产生输出振荡。 反馈分压器被耦合以基于分频器值从输出振荡产生反馈振荡。 环路滤波器包括第一电阻 - 电容电路和第二电阻 - 电容电路。 使用第一校准技术校准第一电阻器电容器电路,并且使用第二校准技术校准第二电阻器电容器电路。