Title:
ANTENNA DEVICE
Document Type and Number:
Japanese Patent JP2017220849
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an antenna device which is easily manufactured and capable of sufficiently spreading magnetic field distribution.SOLUTION: An antenna device comprises: a flat spiral coil C1 around which a first conductor pattern 30 is spirally wound, the flat spiral coil C1 constituting first and second connection terminals 41 and 42 by dividing a conductor pattern 30a extending in an (x) direction; and a solenoid coil C2 including a magnetic core 50 and a second conductor pattern 60 wound around its surface and including third and fourth connection terminals 43 and 44 connected to the first and second connection terminals 41 and 42. A width of the magnetic core 50 in a (y) direction is larger than that in the (x) direction, such that the magnetic core protrudes in an inner diameter region 34 of the flat spiral coil C1. Thus, the antenna device can be easily manufactured and is also capable of sufficiently spreading magnetic field distribution.SELECTED DRAWING: Figure 1
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Inventors:
KOMACHI TOSHIFUMI
TOMONARI TOSHIO
ASO HIROFUMI
TOMONARI TOSHIO
ASO HIROFUMI
Application Number:
JP2016115104A
Publication Date:
December 14, 2017
Filing Date:
June 09, 2016
Export Citation:
Assignee:
TDK CORP
International Classes:
H01Q7/00; H01Q1/38; H01Q7/08
Attorney, Agent or Firm:
Mitsuhiro Washito
Ogata Japanese
Yasuyuki Kurose
Ogata Japanese
Yasuyuki Kurose