公开(公告)号：EP2608413B1

公开(公告)日：2018-05-30

申请号：EP11818426.6

申请日：2011-08-19

申请人： Samsung Electronics Co., Ltd. ,  Konkuk University Industrial Cooperation Corp.

发明人： LEE, Kang-Yoon ,  PU, Young-Gun ,  PARK, An-Soo ,  PARK, Joon-Sung ,  LEE, Jae-Sup

IPC分类号： H03L7/18

CPC分类号： H03L7/089 ,  H03L7/085 ,  H03L7/18 ,  H03L2207/50

摘要： A digital Phase Locked Loop (PLL) in a wireless communication system is provided. The PLL includes a Digitally Controlled Oscillator (DCO), a divider, a Phase Frequency Detector (PFD), a Time to Digital Converter (TDC), a delay comparator, and a level scaler. The DCO generates a frequency signal depending on an input Digital Tuning Word (DTW). The divider divides the frequency signal at an integer ratio. The PFD generates a signal representing a phase difference between a divided frequency signal and a reference signal. The TDC measures a time interval of the phase difference using the signal representing the phase difference. The delay comparator calculates a time interval in the case where rising edges coincide from values measured by the TDC. The level scaler generates a DTW that operates the DCO using a digital code representing the time interval.

公开(公告)号：EP2608413A2

公开(公告)日：2013-06-26

申请号：EP11818426.6

申请日：2011-08-19

申请人： Samsung Electronics Co., Ltd ,  Konkuk University Industrial Cooperation Corp.

发明人： LEE, Kang-Yoon ,  PU, Young-Gun ,  PARK, An-Soo ,  PARK, Joon-Sung ,  LEE, Jae-Sup

IPC分类号： H03L7/089

CPC分类号： H03L7/089 ,  H03L7/085 ,  H03L7/18 ,  H03L2207/50

摘要： A digital Phase Locked Loop (PLL) in a wireless communication system is provided. The PLL includes a Digitally Controlled Oscillator (DCO), a divider, a Phase Frequency Detector (PFD), a Time to Digital Converter (TDC), a delay comparator, and a level scaler. The DCO generates a frequency signal depending on an input Digital Tuning Word (DTW). The divider divides the frequency signal at an integer ratio. The PFD generates a signal representing a phase difference between a divided frequency signal and a reference signal. The TDC measures a time interval of the phase difference using the signal representing the phase difference. The delay comparator calculates a time interval in the case where rising edges coincide from values measured by the TDC. The level scaler generates a DTW that operates the DCO using a digital code representing the time interval.