发明授权
- 专利标题: Magnetic antenna, board mounted with the same, and RF tag
- 专利标题(中): 磁性天线,安装了相同的板,和RF标签
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申请号: US12989162申请日: 2009-04-22
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公开(公告)号: US09397401B2公开(公告)日: 2016-07-19
- 发明人: Jun Koujima , Tetsuya Kimura , Takanori Doi , Yoshiro Sato
- 申请人: Jun Koujima , Tetsuya Kimura , Takanori Doi , Yoshiro Sato
- 申请人地址: JP Hiroshima-shi, Hiroshima-ken
- 专利权人: TODA KOGYO CORPORATION
- 当前专利权人: TODA KOGYO CORPORATION
- 当前专利权人地址: JP Hiroshima-shi, Hiroshima-ken
- 代理机构: Nixon & Vanderhye P.C.
- 优先权: JP2008-116334 20080425
- 国际申请: PCT/JP2009/001851 WO 20090422
- 国际公布: WO2009/130901 WO 20091029
- 主分类号: H01Q7/08
- IPC分类号: H01Q7/08 ; G06K19/077 ; H01F1/34 ; H01Q1/40 ; H05K1/16 ; H01F41/16
摘要:
The present invention relates to a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity. The magnetic antenna of the present invention is used for transmitting and receiving information using an electromagnetic induction method, and comprises a central core formed of a magnetic material and a non-magnetic material, a coil-shaped electrode material wound around the core, and an insulating layer formed on at least one outside surface of the core on which the coil-shaped electrode material is provided, in which the magnetic material is separated into two or more parts through the non-magnetic material when viewed in a section of the core which is perpendicular to a magnetic flux passing therethrough.