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:
Aug. 03, 2004
Filed:
Jun. 28, 2002
Hideaki Shoji, Tokyo, JP;
Yasuhito Imanishi, Tokyo, JP;
Toru Fukasawa, Tokyo, JP;
Hiroyuki Ohmine, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An antenna device includes: a conductive board ( ) having one end portion and the other end portion opposite the one end portion; a flat plate antenna( ) mounted on the board ( ) with a dielectric interposing therebetween wherein when feeding a current thereto to excite, a current also flows in said board ( ); a first current direction change means ( ) changing a direction of the current flowing in the board ( ) to a first direction when exciting the antenna ( ) and located on said one end portion of the board ( ); and a second current direction change means ( ) changing a direction of the current flowing in the board ( ) to a second direction different from the first direction when exciting said antenna ( ) and located on the other end portion of the board ( ).