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    • 6. 发明申请
    • DIVIDER-LESS PHASE LOCKED LOOP (PLL)
    • 无相位锁相环(PLL)
    • US20140049329A1
    • 2014-02-20
    • US13586033
    • 2012-08-15
    • Yen-Jen ChenI-Ting LeeHsieh-Hung HsiehChewn-Pu JouFu-Lung HsuehShen-Luan Liu
    • Yen-Jen ChenI-Ting LeeHsieh-Hung HsiehChewn-Pu JouFu-Lung HsuehShen-Luan Liu
    • H03L7/099
    • H03K3/0322H03K3/0315H03L7/083H03L7/087H03L7/089H03L7/099
    • One or more techniques and systems for a divider-less phase locked loop (PLL) and associated phase detector (PD) are provided herein. In some embodiments, a pulse phase detector (pulsePD) signal, a voltage controlled oscillator positive differential (VCOP) signal, and a voltage controlled oscillator negative differential (VCON) signal are received. An up signal and a down signal for a first charge pump (CP) and an up signal and a down signal for a second CP are generated based on the pulsePD signal, the VCOP signal, and the VCON signal. For example, CP signals are generated to control the first CP and the second CP, respectively. In some embodiments, CP signals are generated such that the CPs facilitate adjustment of a zero crossing phase of the VCON and VCOP signals with respect to the pulsePD signal. In this manner, a divider-less PLL is provided, thus mitigating PLL power consumption.
    • 本文提供了一种用于无分频锁相环(PLL)和相关相位检测器(PD)的技术和系统。 在一些实施例中,接收脉冲相位检测器(pulsePD)信号,压控振荡器正差分(VCOP)信号和压控振荡器负差分(VCON)信号。 基于pulsePD信号,VCOP信号和VCON信号产生用于第一电荷泵(CP)的上升信号和下降信号以及用于第二CP的上升信号和下降信号。 例如,生成CP信号以分别控制第一CP和第二CP。 在一些实施例中,产生CP信号,使得CP有助于调整相对于pulsePD信号的VCON和VCOP信号的零交叉相位。 以这种方式,提供无分频PLL,从而减轻PLL功耗。
    • 7. 发明申请
    • Built-in Self-test Circuit for Voltage Controlled Oscillators
    • 用于压控振荡器的内置自检电路
    • US20120286836A1
    • 2012-11-15
    • US13103571
    • 2011-05-09
    • Hsieh-Hung HsiehMing Hsien TsaiTzu-Jin YehChewn-Pu JouFu-Lung Hsueh
    • Hsieh-Hung HsiehMing Hsien TsaiTzu-Jin YehChewn-Pu JouFu-Lung Hsueh
    • H03K3/84
    • G01R31/2824
    • A built-in self-test circuit for testing a voltage controlled oscillator comprises a voltage controlled oscillator, a buffer having an input coupled to an output of the voltage controlled oscillator and a radio frequency peak detector coupled to the output of the buffer. The radio frequency peak detector is configured to receive an ac signal from the voltage controlled oscillator and generate a dc value proportional to the ac signal at an output of the radio frequency peak detector. Furthermore, the output of the radio frequency peak detector generates a dc value proportional to an amplitude of the ac signal from the voltage controlled oscillator when the voltage controlled oscillator functions correctly. On the other hand, the output of the radio frequency peak detector is at zero volts when the voltage controlled oscillator fails to generate an ac signal.
    • 用于测试压控振荡器的内置自检电路包括压控振荡器,具有耦合到压控振荡器的输出的输入的缓冲器和耦合到缓冲器的输出的射频峰值检测器。 射频峰值检测器被配置为从压控振荡器接收交流信号,并且在射频峰值检测器的输出处产生与ac信号成比例的直流值。 此外,当压控振荡器正常工作时,射频峰值检测器的输出产生与来自压控振荡器的ac信号的幅度成比例的直流值。 另一方面,当压控振荡器不能产生交流信号时,射频峰值检测器的输出为零伏特。
    • 10. 发明授权
    • Divider-less phase locked loop (PLL)
    • 无分频锁相环(PLL)
    • US08890626B2
    • 2014-11-18
    • US13586033
    • 2012-08-15
    • Yen-Jen ChenI-Ting LeeHsieh-Hung HsiehChewn-Pu JouFu-Lung HsuehShen-Iuan Liu
    • Yen-Jen ChenI-Ting LeeHsieh-Hung HsiehChewn-Pu JouFu-Lung HsuehShen-Iuan Liu
    • H03K3/03
    • H03K3/0322H03K3/0315H03L7/083H03L7/087H03L7/089H03L7/099
    • One or more techniques and systems for a divider-less phase locked loop (PLL) and associated phase detector (PD) are provided herein. In some embodiments, a pulse phase detector (pulsePD) signal, a voltage controlled oscillator positive differential (VCOP) signal, and a voltage controlled oscillator negative differential (VCON) signal are received. An up signal and a down signal for a first charge pump (CP) and an up signal and a down signal for a second CP are generated based on the pulsePD signal, the VCOP signal, and the VCON signal. For example, CP signals are generated to control the first CP and the second CP, respectively. In some embodiments, CP signals are generated such that the CPs facilitate adjustment of a zero crossing phase of the VCON and VCOP signals with respect to the pulsePD signal. In this manner, a divider-less PLL is provided, thus mitigating PLL power consumption.
    • 本文提供了一种用于无分频锁相环(PLL)和相关相位检测器(PD)的技术和系统。 在一些实施例中,接收脉冲相位检测器(pulsePD)信号,压控振荡器正差分(VCOP)信号和压控振荡器负差分(VCON)信号。 基于pulsePD信号,VCOP信号和VCON信号产生用于第一电荷泵(CP)的上升信号和下降信号以及用于第二CP的上升信号和下降信号。 例如,生成CP信号以分别控制第一CP和第二CP。 在一些实施例中,产生CP信号,使得CP有助于调整相对于pulsePD信号的VCON和VCOP信号的零交叉相位。 以这种方式,提供无分频PLL,从而减轻PLL功耗。