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:
Apr. 06, 2004
Filed:
Aug. 02, 2001
I-Fong Chen, Tao-Yuan, TW;
Auden Techno Corp., Tao-Yuan Hsien, TW;
Abstract
A dual- or multi-frequency planar inverted F-antenna, wherein, a metal surface of the antenna matching the size and shape of the interior installation space of an equipment is installed on the top of a grounding surface, an open slot provided on the metal surface forms a common close end and an open end to thereby partitions the metal surface into a long section and a short section; a desired impedance matching between a short point and a feed point of the metal surface is obtained by adjusting positions of the short point and the feed point in pursuance of frequencies desired; the length of the long section from the short point to the open end of the open slot and the length from the short point to the end point of the short section are decided by dual- or multi-resonance frequencies in cooperating with the open slot which is deformed and curved.