公开(公告)号：US20070135160A1

公开(公告)日：2007-06-14

申请号：US11291458

申请日：2005-11-30

申请人： Jorge Fabrega-Sanchez ,  Henry Chang ,  Srivatsan Veeraraghavan ,  Ammar Kitabi

发明人： Jorge Fabrega-Sanchez ,  Henry Chang ,  Srivatsan Veeraraghavan ,  Ammar Kitabi

IPC分类号： H04B1/04 ,  H04B1/18 ,  H04M1/00

CPC分类号： H04B1/18 ,  H04B1/3805

摘要： A system and method is provided for tuning a Global Positioning System (GPS) antenna matching circuit in a portable wireless communications device. The method includes accepting a first matching circuit tuning value, measuring satellite vehicle (SV) carrier-to-noise ratio (C/N) associated with the first tuning value and a first search time interval, measuring the SV C/N associated with a next tuning value, and selecting the tuning value associated with the highest SV C/N to tune the matching circuit. In one aspect, the method further includes comparing the SV C/N to a first minimum threshold. If the first tuning value SV C/N exceeds the first minimum threshold, then the method measures the SV C/N associated with the next tuning value. Otherwise, a default tuning value can be selected to tune the matching circuit.

摘要翻译： 提供了一种用于调整便携式无线通信设备中的全球定位系统（GPS）天线匹配电路的系统和方法。 该方法包括接收第一匹配电路调谐值，测量与第一调谐值相关联的卫星车辆（SV）载波噪声比（C / N）和第一搜索时间间隔，测量与A相关联的SV C / N 下一个调谐值，并选择与最高SV C / N相关联的调谐值来调谐匹配电路。 一方面，该方法还包括将SV C / N与第一最小阈值进行比较。 如果第一调谐值SV C / N超过第一最小阈值，则该方法测量与下一个调谐值相关联的SV C / N。 否则，可以选择默认调谐值来调谐匹配电路。

公开(公告)号：US07548762B2

公开(公告)日：2009-06-16

申请号：US11291458

申请日：2005-11-30

申请人： Jorge Fabrega-Sanchez ,  Henry Chang ,  Srivatsan Veeraraghavan ,  Ammar Kitabi

发明人： Jorge Fabrega-Sanchez ,  Henry Chang ,  Srivatsan Veeraraghavan ,  Ammar Kitabi

IPC分类号： H04M1/00

CPC分类号： H04B1/18 ,  H04B1/3805

摘要： A system and method is provided for tuning a Global Positioning System (GPS) antenna matching circuit in a portable wireless communications device. The method includes accepting a first matching circuit tuning value, measuring satellite vehicle (SV) carrier-to-noise ratio (C/N) associated with the first tuning value and a first search time interval, measuring the SV C/N associated with a next tuning value, and selecting the tuning value associated with the highest SV C/N to tune the matching circuit. In one aspect, the method further includes comparing the SV C/N to a first minimum threshold. If the first tuning value SV C/N exceeds the first minimum threshold, then the method measures the SV C/N associated with the next tuning value. Otherwise, a default tuning value can be selected to tune the matching circuit.

摘要翻译： 提供了一种用于调整便携式无线通信设备中的全球定位系统（GPS）天线匹配电路的系统和方法。 该方法包括接收第一匹配电路调谐值，测量与第一调谐值相关联的卫星车辆（SV）载波噪声比（C / N）和第一搜索时间间隔，测量与A相关联的SV C / N 下一个调谐值，并选择与最高SV C / N相关联的调谐值来调谐匹配电路。 一方面，该方法还包括将SV C / N与第一最小阈值进行比较。 如果第一调谐值SV C / N超过第一最小阈值，则该方法测量与下一个调谐值相关联的SV C / N。 否则，可以选择默认调谐值来调谐匹配电路。