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. 18, 2006
Filed:
Oct. 25, 2004
Tomohiro Mizuno, Tokyo, JP;
Hiroyuki Satoh, Tokyo, JP;
Hirokatsu Okegawa, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A loop antenna unit (), a balanced line (), and two perturbation elements () are formed on a dielectric board () by using manufacturing methods, such as printing and etching. The loop antenna unit () is formed along the circumference of a circle, and is connected to the balanced line (). Each of the two perturbation elements () is a member in the shape of a tooth which is inclined 45 degrees against a direction of feeding of power via the balanced line () and which is projecting from the loop antenna unit () in an inward direction toward the center of the loop antenna unit (). The two perturbation elements () are arranged at two opposite points in the loop antenna unit () so that they are opposite to each other.