| US 7,592,914 B2 | ||
| Radio frequency identification tag and manufacturing method thereof | ||
| Isao Sakama, Hiratsuka (Japan); and Minoru Ashizawa, Tokyo (Japan) | ||
| Assigned to Hitachi, Ltd., Tokyo (Japan) | ||
| Filed on Jan. 04, 2006, as Appl. No. 11/324,358. | ||
| Claims priority of application No. 2005-244613 (JP), filed on Aug. 25, 2005. | ||
| Prior Publication US 2007/0046466 A1, Mar. 01, 2007 | ||
| Int. Cl. G08B 13/14 (2006.01) | ||
| U.S. Cl. 340—572.1 [340/572.4; 340/572.7; 340/572.8; 340/568.2; 235/491; 235/492; 235/380] | 23 Claims |
| 1. A RFID (radio frequency identification) tag for transmitting information recorded in an IC chip by radio communication,
comprising:
an inlet including the IC chip mounted on a small antenna formed with a slit for impedance matching; and
a second antenna implemented by a space pattern formed in a metal foil, the space pattern including an aperture through the
metal foil,
wherein as a result of forming the space pattern including the aperture, a protrusion is formed on a resin sheet, and
wherein the inlet is mounted on a surface of the second antenna, and the small antenna and the second antenna are electrostatically
coupled to each other.
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