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:
Jun. 30, 2015
Filed:
Aug. 25, 2011
Applicants:
Yuki Endo, Tokyo, JP;
Yasuo Furukawa, Tokyo, JP;
Inventors:
Yuki Endo, Tokyo, JP;
Yasuo Furukawa, Tokyo, JP;
Assignee:
ADVANTEST CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/42 (2006.01); H02J 5/00 (2006.01); H02J 17/00 (2006.01);
U.S. Cl.
CPC ...
H02J 5/005 (2013.01); H02J 17/00 (2013.01);
Abstract
In a wireless power supply system, a first capacitor is arranged in series with an antenna. A second capacitor and a switch are arranged in series on a path arranged in parallel with the first capacitor. A control unit adjusts the duty ratio of the switch according to the frequency of an electric power signal.