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:
Mar. 13, 2018
Filed:
Aug. 30, 2012
Teppei Miura, Nagaokakyo, JP;
Nobuo Ikemoto, Nagaokakyo, JP;
Jun Sasaki, Nagaokakyo, JP;
Noboru Kato, Nagaokakyo, JP;
Nobuhito Tsubaki, Nagaokakyo, JP;
Teppei Miura, Nagaokakyo, JP;
Nobuo Ikemoto, Nagaokakyo, JP;
Jun Sasaki, Nagaokakyo, JP;
Noboru Kato, Nagaokakyo, JP;
Nobuhito Tsubaki, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
An antenna device includes a base including a planar conductor disposed thereon, and a coil antenna. The coil antenna includes a coil conductor wound around a magnetic core. The coil antenna is arranged such that a coil opening of the coil conductor is closed to an edge of the planar conductor. A current passing through the coil conductor induces a current in the planar conductor. Thus, a first magnetic flux occurs in the coil antenna, and a second magnetic flux occurs in the planar conductor. Therefore, a third magnetic flux occurs in an area of the planar conductor. Accordingly, the antenna device achieves a small footprint, a small-sized communication terminal apparatus and a desired communication distance.