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:
May. 29, 2012
Filed:
Dec. 16, 2009
Applicants:
Kouichi Nakamura, Fukuoka, JP;
Takumi Naruse, Fukuoka, JP;
Fumio Fukushima, Fukuoka, JP;
Kuniaki Kiyosue, Fukuoka, JP;
Inventors:
Kouichi Nakamura, Fukuoka, JP;
Takumi Naruse, Fukuoka, JP;
Fumio Fukushima, Fukuoka, JP;
Kuniaki Kiyosue, Fukuoka, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 7/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An antenna unit includes an antenna formed on a magnetic sheet. A transmission circuit includes an inductor, a matching capacitor, and the antenna connected in series, and a reception circuit includes the antenna, the matching capacitor, a resistor, and a capacitor connected in series. The antenna is formed as one turn, and the size of the antenna and the resistor involves a predetermined relationship.