公开(公告)号：US07755439B2

公开(公告)日：2010-07-13

申请号：US12265395

申请日：2008-11-05

申请人： Hwa Yeal Yu ,  Dong Jin Keum

发明人： Hwa Yeal Yu ,  Dong Jin Keum

IPC分类号： H03C3/06 ,  H03L7/00 ,  H03L7/06 ,  H03L7/08 ,  H03L7/093 ,  H03L7/18

CPC分类号： H03L7/1976 ,  H03C3/0925 ,  H03C3/0933 ,  H03C3/0941 ,  H03C3/095 ,  H03C3/0991 ,  H03L7/0891 ,  H03L7/093

摘要： A PLL circuit for two point modulation includes a first loop filter, a second loop filter, a plurality of switching devices, and a calibration module. The first loop filter filters an output voltage of a charge pump during a gain calibration operation. The second loop filter filters the output voltage of the charge pump during a normal operation. The first loop filter has a bandwidth wider than that of the second loop filter to perform a fast calibration by reducing a lock time. The operation of the first loop filter, the operation of the second loop filter, and the opening of the first loop filter are determined by the switching operations of the switching devices. The calibration module adjusts a gain of analog modulation data based on a frequency error accumulated in the first loop filter after the first loop filter is open during the gain calibration operation.

摘要翻译： 用于两点调制的PLL电路包括第一环路滤波器，第二环路滤波器，多个开关装置和校准模块。 第一个环路滤波器在增益校准操作期间对电荷泵的输出电压进行滤波。 第二个环路滤波器在正常运行期间对电荷泵的输出电压进行滤波。 第一环路滤波器具有比第二环路滤波器更宽的带宽，以通过减少锁定时间来执行快速校准。 第一环路滤波器的操作，第二环路滤波器的操作和第一环路滤波器的断开由开关装置的切换操作决定。 在增益校准操作期间，校准模块基于在第一环路滤波器打开之后累积在第一环路滤波器中的频率误差来调整模拟调制数据的增益。

公开(公告)号：US20090153254A1

公开(公告)日：2009-06-18

申请号：US12265395

申请日：2008-11-05

申请人： Hwa Yeal Yu ,  Dong Jin Keum

发明人： Hwa Yeal Yu ,  Dong Jin Keum

IPC分类号： H03L7/08

CPC分类号： H03L7/1976 ,  H03C3/0925 ,  H03C3/0933 ,  H03C3/0941 ,  H03C3/095 ,  H03C3/0991 ,  H03L7/0891 ,  H03L7/093

摘要： A PLL circuit for two point modulation includes a first loop filter, a second loop filter, a plurality of switching devices, and a calibration module. The first loop filter filters an output voltage of a charge pump during a gain calibration operation. The second loop filter filters the output voltage of the charge pump during a normal operation. The first loop filter has a bandwidth wider than that of the second loop filter to perform a fast calibration by reducing a lock time. The operation of the first loop filter, the operation of the second loop filter, and the opening of the first loop filter are determined by the switching operations of the switching devices. The calibration module adjusts a gain of analog modulation data based on a frequency error accumulated in the first loop filter after the first loop filter is open during the gain calibration operation.

摘要翻译： 用于两点调制的PLL电路包括第一环路滤波器，第二环路滤波器，多个开关装置和校准模块。 第一个环路滤波器在增益校准操作期间对电荷泵的输出电压进行滤波。 第二个环路滤波器在正常运行期间对电荷泵的输出电压进行滤波。 第一环路滤波器具有比第二环路滤波器更宽的带宽，以通过减少锁定时间来执行快速校准。 第一环路滤波器的操作，第二环路滤波器的操作和第一环路滤波器的断开由开关装置的切换操作决定。 在增益校准操作期间，校准模块基于在第一环路滤波器打开之后累积在第一环路滤波器中的频率误差来调整模拟调制数据的增益。

公开(公告)号：US09148052B2

公开(公告)日：2015-09-29

申请号：US13426638

申请日：2012-03-22

申请人： Yus Ko ,  Dong Jin Keum

发明人： Yus Ko ,  Dong Jin Keum

IPC分类号： G05F1/575 ,  H02M1/44 ,  H02M1/00

CPC分类号： H02M1/44 ,  H02M2001/0025

摘要： The switching regulator includes a voltage-to-current converter to convert a noise voltage into a noise current and output the noise current; and a sawtooth generator to output a sawtooth voltage signal having a frequency that varies in response to the noise current output from the voltage-to-current converter.

摘要翻译： 开关调节器包括电压 - 电流转换器，用于将噪声电压转换成噪声电流并输出噪声电流; 以及锯齿波发生器，用于输出具有响应于从电压 - 电流转换器输出的噪声电流而变化的频率的锯齿波电压信号。

公开(公告)号：US08126087B2

公开(公告)日：2012-02-28

申请号：US12354433

申请日：2009-01-15

申请人： Ju Young Han ,  Dong Jin Keum ,  Ji Soo Jang

发明人： Ju Young Han ,  Dong Jin Keum ,  Ji Soo Jang

IPC分类号： H04L25/06

CPC分类号： H04L25/061 ,  H03M1/1295

摘要： A DC offset correction circuit includes a DC offset detector generating a detection voltage based on a result of a comparison of a first reference voltage and a voltage difference between signals input to the DC offset detector, a comparator comparing a second reference voltage and the detection voltage and a third reference voltage and the detection voltage and outputting first and second comparison signals, respectively, as a result of the comparisons, and an up/down counter performing an up or a down count operation in response to one of the first or second comparison signals and, as a result of the up or down count operation, outputting a signal that causes at least one control signal for canceling a DC offset in a signal input to a receiver to be generated.

摘要翻译： DC偏移校正电路包括DC偏移检测器，其基于第一参考电压的比较结果和输入到DC偏移检测器的信号之间的电压差产生检测电压;比较器，比较第二参考电压和检测电压 以及第三参考电压和检测电压，并且作为比较的结果分别输出第一和第二比较信号，以及响应于第一或第二比较中的一个比较而执行向上或向下计数操作的向上/向下计数器 信号，并且作为向上或向下计数操作的结果，输出引起至少一个控制信号以消除输入到接收机的信号的DC偏移的信号以产生。

公开(公告)号：US20090185639A1

公开(公告)日：2009-07-23

申请号：US12354433

申请日：2009-01-15

申请人： Ju Young Han ,  Dong Jin Keum ,  Ji Soo Jang

发明人： Ju Young Han ,  Dong Jin Keum ,  Ji Soo Jang

IPC分类号： H04L25/06 ,  H03L5/00 ,  H03M1/66

CPC分类号： H04L25/061 ,  H03M1/1295

摘要： A DC offset correction circuit includes a DC offset detector generating a detection voltage based on a result of a comparison of a first reference voltage and a voltage difference between signals input to the DC offset detector, a comparator comparing a second reference voltage and the detection voltage and a third reference voltage and the detection voltage and outputting first and second comparison signals, respectively, as a result of the comparisons, and an up/down counter performing an up or a down count operation in response to one of the first or second comparison signals and, as a result of the up or down count operation, outputting a signal that causes at least one control signal for canceling a DC offset in a signal input to a receiver to be generated.

摘要翻译： DC偏移校正电路包括DC偏移检测器，其基于第一参考电压的比较结果和输入到DC偏移检测器的信号之间的电压差产生检测电压;比较器，比较第二参考电压和检测电压 以及第三参考电压和检测电压，并且作为比较的结果分别输出第一和第二比较信号，以及响应于第一或第二比较中的一个比较而执行向上或向下计数操作的向上/向下计数器 信号，并且作为向上或向下计数操作的结果，输出引起至少一个控制信号以消除输入到接收机的信号的DC偏移的信号以产生。