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:
Jul. 24, 2007
Filed:
Dec. 21, 2005
Applicant:
Dou Yuanzhu, Fukushima-ken, JP;
Inventor:
Dou Yuanzhu, Fukushima-ken, JP;
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
An antenna device includes a plate-shaped conductor and a radiating conductor that extends outward from an end portion of the conductor and has a length corresponding to a quarter wavelength of a first frequency. A strip-shaped slot portion formed by removing a part of the plate-shaped conductor extending inward from the end portion has a length corresponding to a quarter wavelength of a second frequency. A feed portion is perpendicular to the slot portion and crosses over the slot portion. The feed portion feeds the same signals to the slot portion and the radiating conductor.