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1. 发明申请

US20110133795A1 DIGITAL PHASE-LOCKED LOOP WITH REDUCED LOOP DELAY 审中-公开
标题翻译：数字相位锁定环路，减少环路延迟
公开(公告)号：US20110133795A1
公开(公告)日：2011-06-09
申请号：US12790242
申请日：2010-05-28
申请人： Gyu Suck KIM , Seong Hwan CHO , Woo Kon SON
发明人： Gyu Suck KIM , Seong Hwan CHO , Woo Kon SON
IPC分类号： H03L7/08
CPC分类号： H03L7/1806 , H03L2207/50
摘要： There is provided a digital phase-locked loop. A digital phase-locked loop according to an aspect of the invention may include: a reference phase accumulation unit outputting a reference sampling phase value; a phase detection unit detecting a phase difference signal; a digital loop filter filtering and averaging the phase difference signal from the phase detection unit; a digitally controlled oscillator generating an oscillation signal having a predetermined frequency; a DOC phase accumulation unit outputting the DCO sampling phase value, and generating a plurality of first to n-th D-FFs having the same frequency and different phases delayed in a sequential manner; and first to n-th D-FFs included in a closed loop including the phase detection unit, the digital loop filter, the digitally controlled oscillator, and the DOC phase accumulation unit, and operating according to the plurality of first to n-th clock signals from the DCO phase accumulation unit, respectively.
摘要翻译：提供了数字锁相环。根据本发明的一个方面的数字锁相环可以包括：参考相位累积单元，输出参考采样相位值; 检测相位差信号的相位检测单元; 数字环路滤波器对来自相位检测单元的相位差信号进行滤波和平均; 产生具有预定频率的振荡信号的数字控制振荡器; DOC相位累积单元输出DCO采样相位值，并且产生具有以相继方式延迟的相同频率和不同相位的多个第一至第n个D-FF; 以及包括在相位检测单元，数字环路滤波器，数字控制振荡器和DOC相位累积单元的闭环中的第一至第N-D-FF，并且根据多个第一至第n时钟分别来自DCO相位累积单元的信号。

2. 发明申请

US20070080754A1 VOLTAGE CONTROLLED OSCILLATOR WITH BODY BIAS CONTROL 有权
标题翻译：电压控制振荡器与身体偏差控制
公开(公告)号：US20070080754A1
公开(公告)日：2007-04-12
申请号：US11534453
申请日：2006-09-22
申请人： Dong Min PARK , Seong Hwan CHO , Tah Joon PARK , Yong Il KWON , Joon Hyung LIM , Myeung Su KIM
发明人： Dong Min PARK , Seong Hwan CHO , Tah Joon PARK , Yong Il KWON , Joon Hyung LIM , Myeung Su KIM
IPC分类号： H03L7/099
CPC分类号： H03L5/00 , H03B5/1212 , H03B5/1228 , H03B5/1243 , H03B5/1278
摘要： In a voltage controlled oscillator, a resonant circuit generates a resonant frequency in response to a tuning voltage. A differential oscillator includes first and second transistors differentially cross-coupled to the resonant circuit. The first and second transistors supply energy to the resonant circuit to oscillate the resonant frequency from the resonant circuit, thereby generating first and second oscillation signals having a phase difference of 180 degree. Also, the first and second transistors adjust the first and second oscillation signals to a uniform level in response to a body bias voltage. In addition, an output level detector detects a level of the first and second oscillation signals from the differential oscillator and supplies the body bias voltage corresponding to the detected level to a body of each of the first and second transistors.
摘要翻译：在压控振荡器中，谐振电路响应于调谐电压产生谐振频率。差分振荡器包括与谐振电路差分交叉耦合的第一和第二晶体管。第一和第二晶体管向谐振电路提供能量以从谐振电路振荡谐振频率，从而产生具有180度相位差的第一和第二振荡信号。此外，第一和第二晶体管响应于体偏置电压将第一和第二振荡信号调整到均匀的电平。此外，输出电平检测器检测来自差分振荡器的第一和第二振荡信号的电平，并将与检测电平相对应的体偏置电压提供给第一和第二晶体管中的每一个的主体。

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