公开(公告)号：US20140239075A1

公开(公告)日：2014-08-28

申请号：US14272607

申请日：2014-05-08

Applicant: TODA KOGYO CORPORATION

Inventor： Jun KOUJIMA ,  Takanori DOI ,  Tetsuya KIMURA

IPC: G06K19/077

CPC classification number: G06K19/07728 ,  G06K19/07722 ,  G06K19/07749 ,  H01F17/0033 ,  H01F27/022 ,  H01Q1/04 ,  H01Q1/2225 ,  H01Q1/40 ,  H01Q7/08

Abstract: The present invention relates to a composite RF tag for transmitting and receiving information using an electromagnetic induction method, comprising a magnetic antenna mounted with an IC, and a resin layer formed around the magnetic antenna, wherein the magnetic antenna comprises a central core formed of a magnetic material and a coil-shaped electrode material disposed around the core. The RF tag according to the present invention comprises the magnetic antenna surrounded by the resin, and therefore can provide a composite magnetic RF tag which can minimize adverse influence by surrounding water or metals in view of maintenance of tools or parts to which the composite RF tag is mounted, and is free from occurrence of any failure or cracking.

Abstract translation: 本发明涉及一种用于使用电磁感应方法发送和接收信息的复合RF标签，其包括安装有IC的磁性天线和围绕该磁性天线形成的树脂层，其中该磁性天线包括由 磁性材料和设置在芯周围的线圈状电极材料。 根据本发明的RF标签包括由树脂包围的磁性天线，因此可以提供复合磁RF标签，其可以考虑到维护复合RF标签的工具或部件，从而最小化周围的水或金属的不利影响 被安装，没有发生任何故障或破裂。

公开(公告)号：US20170187092A1

公开(公告)日：2017-06-29

申请号：US15459236

申请日：2017-03-15

Applicant: TODA KOGYO CORPORATION

Inventor： Jun KOUJIMA ,  Satoshi OHMAE ,  Tetsuya KIMURA ,  Yoshiro SATO

IPC: H01Q1/22 ,  H01Q7/00

CPC classification number: H01Q1/2225 ,  H01Q7/00 ,  H01Q7/08 ,  H04B5/0087 ,  H05K1/165 ,  H05K2203/162

Abstract: The present invention relates to an RF tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an IC mounted to the magnetic antenna, wherein the magnetic antenna comprises a magnetic core and a plurality of coils formed on the magnetic core; the coils each have an inductance L1 satisfying the specific relational formula, and are connected in parallel to each other in an electric circuit and disposed in series on the magnetic core; and a combined inductance L0 of the magnetic antenna satisfies the specific relational formula. The RF tag of the present invention is used as 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.