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:
Feb. 09, 2021
Filed:
Apr. 19, 2018
Applicant:
Ricoh Company, Ltd., Tokyo, JP;
Inventors:
Naohiro Itoh, Hyogo, JP;
Takashi Otsuki, Hyogo, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 7/08 (2006.01); H01P 3/08 (2006.01); H01Q 13/10 (2006.01); H01Q 13/20 (2006.01); H01Q 1/36 (2006.01); H01Q 7/00 (2006.01);
U.S. Cl.
CPC ...
H01P 3/081 (2013.01); H01Q 1/36 (2013.01); H01Q 7/005 (2013.01); H01Q 7/08 (2013.01); H01Q 13/106 (2013.01); H01Q 13/206 (2013.01);
Abstract
An antenna device includes an antenna body, a circuit board, a joint, a transmission line conductor, and a line conductor. The antenna body includes a magnetic body and a conducting wire wound around the magnetic body in a spiral shape. The joint is disposed on the circuit board and coupled to an end of the conducting wire. The transmission line conductor is coupled to the joint. The line conductor is coupled to one of the end of the conducting wire and the transmission line conductor. At least one of a pattern and a length of the line conductor is changeable to adjust an equivalent impedance value of the antenna body.