To provide an earmark RFID tag for animals, reducing the influence by a living body such as the ear or the face of an animal of a managed object, and the interference of antennas to each other even when two RFID tags of dipole antennas are used as the antenna element.
The earmark RFID tag for animals includes a tag part having a hole part, the first dipole antenna which is installed in the tag part and in which the first IC chip is electrically connected to the first power-supplying part through the first matching line, and the second dipole antenna which is installed in the tag part so that the second power-supplying part may face to the first power-supplying part, and in which the second IC chip is electrically connected to the second power-supplying part through the second matching line. The first angle that the direction directed from the hole part to the first power-supplying part makes with the slope of the first dipole antenna, and the second angle that the direction directed from the hole part to the second power-supplying part makes with the slope of the second dipole antenna are regulated so as to be different.
COPYRIGHT: (C)2010,JPO&INPIT
Horai Kenji
| JP2003333950A | ||||
| JP2008283404A | ||||
| JP2007274967A |
| WO2005079562A1 |
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka