发明专利
JP2012175471A Magnetic field coupling type communication device and magnetic field coupling type communication system
审中-公开
基本信息:
- 专利标题: Magnetic field coupling type communication device and magnetic field coupling type communication system
- 专利标题(中):磁场耦合型通信装置和磁场耦合型通信系统
- 申请号:JP2011036497 申请日:2011-02-23
- 公开(公告)号:JP2012175471A 公开(公告)日:2012-09-10
- 发明人: IEGI TSUTOMU , BABA TAKAHIRO , SAKAI MASARU , IKEMOTO NOBUO , DOKAI TAKEYA
- 申请人: Murata Mfg Co Ltd , 株式会社村田製作所
- 专利权人: Murata Mfg Co Ltd,株式会社村田製作所
- 当前专利权人: Murata Mfg Co Ltd,株式会社村田製作所
- 优先权: JP2011036497 2011-02-23
- 主分类号: H04B5/02
- IPC分类号: H04B5/02 ; H04M1/02
摘要:
PROBLEM TO BE SOLVED: To achieve an RFID communication system that can perform stable magnetic field coupling type communication.SOLUTION: In a reader/writer 10, a transmission antenna 101Tx and a reception antenna 101Rx of a loop-like antenna are closely arranged. To the transmission antenna 101Tx, a paramagnetic first magnetic body 102A is arranged on an external side of the reader/writer 10. To the reception antenna 101Rx, a paramagnetic second magnetic body 102B is arranged on the external side of the reader/writer 10. To an RFID tag 20, a transmission/reception antenna 201 consisting of a coil-like antenna is arranged. To the transmission/reception antenna 201, a paramagnetic third magnetic body 203 is arranged on an inner side of the RFID tag 20. Thereby, magnetic field coupling between the transmission antenna 101Tx and the reception antenna 101Rx is suppressed, and the magnetic field coupling between the transmission antenna 101Tx and the reception antenna 101Rx, and the transmission/reception antenna 201 is strengthened.
摘要(中):
解决的问题:实现能够进行稳定的磁场耦合型通信的RFID通信系统。 解决方案:在读取器/写入器10中,环形天线的发送天线101Tx和接收天线101Rx紧密配置。 在发送天线101Tx中,顺磁性第一磁性体102A配置在读写器10的外侧。另外,在接收天线101Rx中,在读写器10的外侧配置顺磁性第二磁性体102B。 对于RFID标签20,布置有由线圈状天线组成的发送/接收天线201。 在发送接收天线201中,在RFID标签20的内侧配置有顺磁性的第3磁性体203,能够抑制发送天线101Tx与接收天线101Rx之间的磁场耦合, 发送天线101Tx和接收天线101Rx以及发送/接收天线201被加强。 版权所有(C)2012,JPO&INPIT