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1. 发明申请

US20120013377A1 Digital Phase Locked Loop 有权
标题翻译：数字锁相环
公开(公告)号：US20120013377A1
公开(公告)日：2012-01-19
申请号：US12914956
申请日：2010-10-28
申请人： Weicheng Zhang , Ming Shi , Wei-Hua Zou , Shu-Sun Yu , Chieh-Yuan Chao
发明人： Weicheng Zhang , Ming Shi , Wei-Hua Zou , Shu-Sun Yu , Chieh-Yuan Chao
IPC分类号： H03L7/06
CPC分类号： G01R25/08 , G01R23/15
摘要： An adaptive digital phase locked loop comprises: a digital configurable phase detector for receiving a reference signal and a feedback signal and for generating a detection signal indicative of a phase/frequency difference between the reference signal and the feedback signal; a configurable digital loop filter for filtering the DPFD detection signal; a digital locking monitor for monitoring polarity transitions of the detection signal and adaptively switching the locking modes and DCO tuning resolution; and a DCO for generating the feedback signal as a function of the detection signal.
摘要翻译：自适应数字锁相环包括：数字可配置相位检测器，用于接收参考信号和反馈信号，并用于产生指示参考信号和反馈信号之间的相位/频率差的检测信号; 用于过滤DPFD检测信号的可配置数字环路滤波器; 数字锁定监视器，用于监视检测信号的极性转换，并自适应地切换锁定模式和DCO调谐分辨率; 以及用于根据检测信号产生反馈信号的DCO。

2. 发明授权

US08081013B1 Digital phase and frequency detector 有权
标题翻译：数字相位和频率检测器
公开(公告)号：US08081013B1
公开(公告)日：2011-12-20
申请号：US12835689
申请日：2010-07-13
申请人： Weicheng Zhang , Ming Shi , Wei-Hua Zou , Shu-Sun Yu , Chieh-Yuan Chao
发明人： Weicheng Zhang , Ming Shi , Wei-Hua Zou , Shu-Sun Yu , Chieh-Yuan Chao
IPC分类号： G01R25/00 , H03D13/00
CPC分类号： G01R25/08 , G01R23/15
摘要： A method for digital phase detection, comprises the steps of: providing a reference clock; receiving a feedback clock; determining a timing difference between the reference clock and the feedback clock; determining a polarity that indicates the leading or lagging relationship between the reference clock and the feedback clock; adaptively selecting one of at least two operating modes for generating a quantized level indicative of the timing difference, wherein in a first operating mode the quantized level is a constant maximum value and wherein in a second operating mode the quantized level is proportional to the timing difference; and generating a digital phase detection output as a combination of the polarity and the quantized level.
摘要翻译：一种用于数字相位检测的方法，包括以下步骤：提供参考时钟; 接收反馈时钟; 确定参考时钟和反馈时钟之间的定时差; 确定指示参考时钟和反馈时钟之间的引导或滞后关系的极性; 自适应地选择用于产生指示定时差的量化电平的至少两个操作模式中的一个，其中在第一操作模式中，量化电平是恒定的最大值，并且其中在第二操作模式中，量化电平与定时差成比例 ; 并产生数字相位检测输出作为极性和量化电平的组合。

3. 发明授权

US08102197B1 Digital phase locked loop 有权
标题翻译：数字锁相环
公开(公告)号：US08102197B1
公开(公告)日：2012-01-24
申请号：US12914956
申请日：2010-10-28
申请人： Weicheng Zhang , Ming Shi , Wei-Hua Zou , Shu-Sun Yu , Chieh-Yuan Chao
发明人： Weicheng Zhang , Ming Shi , Wei-Hua Zou , Shu-Sun Yu , Chieh-Yuan Chao
IPC分类号： H03L7/06
CPC分类号： G01R25/08 , G01R23/15
摘要： An adaptive digital phase locked loop comprises: a digital configurable phase detector for receiving a reference signal and a feedback signal and for generating a detection signal indicative of a phase/frequency difference between the reference signal and the feedback signal; a configurable digital loop filter for filtering the DPFD detection signal; a digital locking monitor for monitoring polarity transitions of the detection signal and adaptively switching the locking modes and DCO tuning resolution; and a DCO for generating the feedback signal as a function of the detection signal.
摘要翻译：自适应数字锁相环包括：数字可配置相位检测器，用于接收参考信号和反馈信号，并用于产生指示参考信号和反馈信号之间的相位/频率差的检测信号; 用于过滤DPFD检测信号的可配置数字环路滤波器; 数字锁定监视器，用于监视检测信号的极性转换，并自适应地切换锁定模式和DCO调谐分辨率; 以及用于根据检测信号产生反馈信号的DCO。

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