Title:
ANTENNA DEVICE AND PORTABLE WIRELESS EQUIPMENT COMPRISING THE SAME
Document Type and Number:
Japanese Patent JP2017204777
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce a plane size of an antenna device, and to increase a communication distance of the same.SOLUTION: An antenna device comprises: a first metal layer 102 that has first and second regions 121 and 122; and a coil pattern 10A overlapped with the first metal layer 102 in a plan view, and that has first and second terminals 13 and 14. The first region 121 of the first metal layer 102 and the first terminal 13 of the coil pattern 10A are connected with each other, and the second region 122 of the first metal layer 102 and the second terminal 14 of the coil pattern 10A are connected with each other. Due to this invention, since the coil pattern is overlapped with the first metal layer, a plane size of the antenna device can be reduced. Further, since the first metal layer is connected with the coil pattern, and thereby, a large loop via the first metal layer 102 is formed, higher antenna characteristics can be obtained.SELECTED DRAWING: Figure 9
Inventors:
KOMACHI TOSHIFUMI
TOMONARI TOSHIO
ASO HIROFUMI
TOMONARI TOSHIO
ASO HIROFUMI
Application Number:
JP2016096310A
Publication Date:
November 16, 2017
Filing Date:
May 12, 2016
Export Citation:
Assignee:
TDK CORP
International Classes:
H01Q1/44; H01Q1/24; H01Q7/00; H01Q7/06
Attorney, Agent or Firm:
Mitsuhiro Washito
Ogata Japanese
Yasuyuki Kurose
Ogata Japanese
Yasuyuki Kurose