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. 01, 2014
Filed:
Apr. 25, 2011
Masaru Kanazawa, Kawasaki, JP;
Kouji Soekawa, Kawasaki, JP;
Masaru Kanazawa, Kawasaki, JP;
Kouji Soekawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An antenna device includes a board made of dielectric material, having first and second power feed parts; a first antenna element connected to the first power feed part, using a first wavelength; a second antenna element connected to the second power feed part, using a second wavelength; a ground formed on the board, having a first side and a second side respectively having different lengths and extending in different directions, the length of the first side, compared with the length of second side, which is approximate to a ¼ length of the first wavelength and a ¼ length of the second wavelength; and a parasitic element connected to the ground, which is not parallel to the first side of the ground, a length of the parasitic element is approximate to ¼ length of the second wavelength and an interval of the parasitic element and the second power feed part is less than equals the ¼ length of the second wavelength.