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:
Apr. 25, 2017
Filed:
Nov. 29, 2013
Applicant:
Advantest Corporation, Tokyo, JP;
Inventors:
Yuki Endo, Tokyo, JP;
Yasuo Furukawa, Tokyo, JP;
Assignee:
ADVANTEST CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 38/14 (2006.01); H02J 5/00 (2016.01); H04B 5/00 (2006.01); H02J 50/10 (2016.01); H02J 50/12 (2016.01); H02J 17/00 (2006.01);
U.S. Cl.
CPC ...
H01F 38/14 (2013.01); H02J 5/005 (2013.01); H02J 17/00 (2013.01); H02J 50/10 (2016.02); H02J 50/12 (2016.02); H04B 5/0037 (2013.01); H04B 5/0075 (2013.01);
Abstract
An automatic tuning assist circuit is coupled with a transmission antenna. Multiple switches SW and a first auxiliary capacitor CA are arranged between a first terminal and a second terminal of the automatic tuning assist circuit. A first control unit is configured to switch on and off the multiple switches SW in synchronization with a driving voltage V. A power supply is configured to apply the driving voltage Vacross a series circuit that comprises the transmission antenna and the automatic tuning assist circuit.