The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 2009
Filed:
Nov. 30, 2005
Jorge Fabrega-sanchez, San Diego, CA (US);
Henry Chang, San Diego, CA (US);
Srivatsan Veeraraghavan, San Diego, CA (US);
Ammar Kitabi, San Diego, CA (US);
Jorge Fabrega-Sanchez, San Diego, CA (US);
Henry Chang, San Diego, CA (US);
Srivatsan Veeraraghavan, San Diego, CA (US);
Ammar Kitabi, San Diego, CA (US);
Kyocera Corporation, Kyoto, JP;
Abstract
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.