公开(公告)号：EP1943737B1

公开(公告)日：2018-12-05

申请号：EP06825983.7

申请日：2006-10-13

申请人： Skyworks Solutions, Inc.

发明人： WANG, Hua ,  RIPLEY, David, S. ,  ROLL, Bryan, J.

IPC分类号： H03L7/02 ,  H03L7/193 ,  H03L7/187

CPC分类号： H03L7/0992 ,  H03B1/00 ,  H03B5/1265 ,  H03B5/1271 ,  H03L1/00 ,  H03L7/099 ,  H03L7/10 ,  H03L7/18 ,  H03L7/187 ,  H03L7/193

摘要： According to one exemplary embodiment, an auto-tuning circuit (104) coupled to a voltage controlled oscillator (102) in a phase locked loop, where the voltage controlled oscillator is coupled to a capacitor array (105), includes a prescaler circuit (106) configured to provide a divided voltage controlled oscillator frequency, where the prescaler circuit is used in the phase locked loop during fine tuning of the voltage controlled oscillator in the auto-tuning circuit during coarse tuning of the voltage controlled oscillator. The auto-tuning circuit further includes a digital processing logic circuit (108) coupled to the prescaler circuit and configured to determine a capacitance of the capacitor array by comparing comp_cnt to a predetermined value, where comp_cnt is determined by a number of cycles of the divided voltage controlled oscillator frequency that occur in a calibration interval.

公开(公告)号：EP1943737A2

公开(公告)日：2008-07-16

申请号：EP06825983.7

申请日：2006-10-13

申请人： Skyworks Solutions, Inc.

发明人： WANG, Hua ,  RIPLEY, David, S. ,  ROLL, Bryan, J.

IPC分类号： H03L7/02

CPC分类号： H03L7/0992 ,  H03B1/00 ,  H03B5/1265 ,  H03B5/1271 ,  H03L1/00 ,  H03L7/099 ,  H03L7/10 ,  H03L7/18 ,  H03L7/187 ,  H03L7/193

摘要： According to one exemplary embodiment, an auto-tuning circuit (104) coupled to a voltage controlled oscillator (102) in a phase locked loop, where the voltage controlled oscillator is coupled to a capacitor array (105), includes a prescaler circuit (106) configured to provide a divided voltage controlled oscillator frequency, where the prescaler circuit is used in the phase locked loop during fine tuning of the voltage controlled oscillator in the auto-tuning circuit during coarse tuning of the voltage controlled oscillator. The auto-tuning circuit further includes a digital processing logic circuit (108) coupled to the prescaler circuit and configured to determine a capacitance of the capacitor array by comparing comp_cnt to a predetermined value, where comp_cnt is determined by a number of cycles of the divided voltage controlled oscillator frequency that occur in a calibration interval.

摘要翻译： 根据一个示例性实施例，耦合到锁相环中的压控振荡器（102）的自动调谐电路（104），其中压控振荡器耦合到电容器阵列（105），包括预分频器电路 被配置为提供分压控制的振荡器频率，其中预调整器电路在压控振荡器的粗调过程中在自动调谐电路中的压控振荡器的微调时期间用于锁相环中。 自动调谐电路进一步包括耦合到预定标器电路的数字处理逻辑电路（108），其被配置为通过比较补偿与预定值来确定电容器阵列的电容，其中补偿由 在校准间隔内发生的分压控制振荡器频率的周期数。