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:
Jan. 13, 2009
Filed:
Mar. 15, 2007
Hiroyuki Hotta, Tokyo, JP;
Satoshi Mizoguchi, Tokyo, JP;
Koichi Sato, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
There is provided an antenna device of a radio apparatus, including a fed partial element, a folded partial element and an open-ended partial element. The fed partial element is formed to be extended from a fed portion to a first branch portion where the folded partial element branches off. The folded partial element has a grounded end and has a forward path and a backward path short-circuited to each other. The folded partial element and a path on the fed partial element from the fed portion to the first branch portion have a summed length of about a half wavelength of a first frequency. The open-ended partial element branches off at a second branch portion. The open-ended partial element and a path on the fed partial element from the fed portion to the second branch portion have a summed length of about a one-fourth wavelength of a second frequency.