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:
May. 03, 2011
Filed:
Sep. 30, 2008
Applicants:
Chao-hui Yu, Tu-Cheng, TW;
Hung-jen Chen, Tu-Cheng, TW;
Yu-yuan Wu, Tu-Cheng, TW;
Inventors:
Assignee:
Cheng Uei Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
An antenna system adapted for a communication device has a common antenna with a predetermined length, an AM matching circuit matching with the common antenna and an FM matching circuit matching with the common antenna. A switch alternatively electrically connects the common antenna to the AM matching circuit and the FM matching circuit for achieving the AM function and FM function.