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:
Dec. 15, 2009
Filed:
Jul. 21, 2005
Hiroyuki Uno, Ishikawa, JP;
Yutaka Saito, Ishikawa, JP;
Genichiro Ohta, Kanagawa, JP;
Yoshio Koyanagi, Kanagawa, JP;
Hiroyuki Uno, Ishikawa, JP;
Yutaka Saito, Ishikawa, JP;
Genichiro Ohta, Kanagawa, JP;
Yoshio Koyanagi, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Provided is an antenna which has a small-sized planar constitution as can be easily mounted on a small-sized radio device and which can form a principal beam having a vertical polarization in directions of low and high elevation angles. On the surface of a substrate, slot elementsA andB having a length of about one half wavelength are arranged in parallel at a predetermined distance d, and a reflecting plateis arranged at a predetermined distance h from the mounting face of the slot elementsA andB. On the back of the substrate, parasitic elementsA toD are made of a copper foil pattern and are arrayed to intersect the slot elementsA andB at right angles. A switching elementA is connected with the parasitic elementsA andB, and a switching elementB is connected with the parasitic elementsC andD.