公开(公告)号：US08698565B2

公开(公告)日：2014-04-15

申请号：US12802282

申请日：2010-06-02

申请人： Thomas Obkircher ,  Bipul Agarwal ,  Georgi Taskov

发明人： Thomas Obkircher ,  Bipul Agarwal ,  Georgi Taskov

IPC分类号： H03L7/00

CPC分类号： H03L7/099 ,  H03J2200/10

摘要： A method and apparatus is disclosed for voltage-controlled oscillator selection in a multi-mode system having multiple voltage-controlled oscillators. Part of oscillator selection is a calibration operation that utilizes maximum and minimum capacitance limits for a voltage-controlled oscillator, which translates to a frequency range, to calculate overlap regions. Overlap regions comprise frequency ranges that overlap such that the overlap region may be generated by two voltage-controlled oscillators with adjacent frequency ranges. One voltage-controlled oscillator selection routine comprises a real time voltage-controlled oscillator calibration and selection routine that executes every time the system requests a new frequency. Another selection routine comprises a start-up routine that executes only at power up or periodically. Another selection routine comprises a successive voltage-controlled oscillator routine that executes every time a frequency is requested by comparing a requested frequency to different frequency thresholds without executing a calibration operation.

摘要翻译： 公开了一种用于具有多个压控振荡器的多模系统中的压控振荡器选择的方法和装置。 振荡器选择的一部分是校准操作，其利用压控振荡器的最大和最小电容极限，其转换为频率范围以计算重叠区域。 重叠区域包括重叠的频率范围，使得重叠区域可以由具有相邻频率范围的两个压控振荡器产生。 一个压控振荡器选择程序包括每次系统请求新频率时执行的实时压控振荡器校准和选择程序。 另一选择例程包括仅在上电或周期性地执行的启动程序。 另一种选择程序包括连续的压控振荡器程序，每次通过在不执行校准操作的情况下将请求的频率与不同的频率阈值进行比较来执行频率。

公开(公告)号：US20110298503A1

公开(公告)日：2011-12-08

申请号：US12802282

申请日：2010-06-02

申请人： Thomas Obkircher ,  Bipul Agarwal ,  Georgi Taskov

发明人： Thomas Obkircher ,  Bipul Agarwal ,  Georgi Taskov

IPC分类号： H03L7/08

CPC分类号： H03L7/099 ,  H03J2200/10

摘要： A method and apparatus is disclosed for voltage-controlled oscillator selection in a multi-mode system having multiple voltage-controlled oscillators. Part of oscillator selection is a calibration operation that utilizes maximum and minimum capacitance limits for a voltage-controlled oscillator, which translates to a frequency range, to calculate overlap regions. Overlap regions comprise frequency ranges that overlap such that the overlap region may be generated by two voltage-controlled oscillators with adjacent frequency ranges. One voltage-controlled oscillator selection routine comprises a real time voltage-controlled oscillator calibration and selection routine that executes every time the system requests a new frequency. Another selection routine comprises a start-up routine that executes only at power up or periodically. Another selection routine comprises a successive voltage-controlled oscillator routine that executes every time a frequency is requested by comparing a requested frequency to different frequency thresholds without executing a calibration operation.

摘要翻译： 公开了一种用于具有多个压控振荡器的多模系统中的压控振荡器选择的方法和装置。 振荡器选择的一部分是校准操作，其利用压控振荡器的最大和最小电容极限，其转换为频率范围以计算重叠区域。 重叠区域包括重叠的频率范围，使得重叠区域可以由具有相邻频率范围的两个压控振荡器产生。 一个压控振荡器选择程序包括每次系统请求新频率时执行的实时压控振荡器校准和选择程序。 另一选择例程包括仅在上电或周期性地执行的启动程序。 另一种选择程序包括连续的压控振荡器程序，每次通过在不执行校准操作的情况下将请求的频率与不同的频率阈值进行比较来执行频率。