公开(公告)号：EP1133825B1

公开(公告)日：2011-11-02

申请号：EP99948404.1

申请日：1999-09-22

申请人： Ericsson Inc.

发明人： NORTHCUTT, John, W. ,  DENT, Paul, Wilkinson ,  SHULL, Eric, Alan ,  ZIEN, Harvey

IPC分类号： H03J7/04 ,  H03L1/02

CPC分类号： H03J7/045 ,  H03L1/026

摘要： Methods and systems are provided for frequency generation suitable for use in wireless devices capable of operating at multiple frequencies. Such systems may change the loop gain of an automatic frequency control loop based on the operating frequency of the wireless device. Furthermore, such a frequency dependent loop gain may be carried out by the selection of subroutines with differing loop gains associated with the subroutines. Furthermore, the loop gain may also be temperature compensated based on the temperature of the wireless device and/or the operating frequency of the device.

公开(公告)号：EP1133825A2

公开(公告)日：2001-09-19

申请号：EP99948404.1

申请日：1999-09-22

申请人： ERICSSON INC.

发明人： NORTHCUTT, John, W. ,  DENT, Paul, Wilkinson ,  SHULL, Eric, Alan ,  ZIEN, Harvey

IPC分类号： H03J7/04 ,  H03L1/02

CPC分类号： H03J7/045 ,  H03L1/026

摘要： Methods and systems are provided for frequency generation suitable for use in wireless devices capable of operating at multiple frequencies. Such systems may change the loop gain of an automatic frequency control loop based on the operating frequency of the wireless device. Furthermore, such a frequency dependent loop gain may be carried out by the selection of subroutines with differing loop gains associated with the subroutines. Furthermore, the loop gain may also be temperature compensated based on the temperature of the wireless device and/or the operating frequency of the device.