Patent ID: 8174390
Filing Date: 2012-05-08
Classification: G06K,G08B,H01Q

Abstract:
1. A radio frequency identification (RFID) tag attached to an object, and transmitting electromagnetic waves that correspond to identification information, the RFID tag comprising: an RFID tag chip modulating the electromagnetic waves based on the identification information; and an RFID tag antenna transmitting the modulated electromagnetic waves, wherein the RFID tag antenna comprises a polyhedral dielectric material having a first surface that contacts the object and a second surface that is parallel with the first surface, a radiating patch formed on at least one part of the second surface and radiating the electromagnetic waves, at least one slit formed on at least one part of the radiating patch to expose the dielectric material, and a feed line formed to be connected to the RFID to chi on at least one at least one part of an area of the second surface where the radiating patch is not formed, and supplying power to the RFID tag chip through magnetic coupling with the radiating patch, wherein the feed line has a loop shape consisting of at least three sides, and the radiating patch surrounds at least two sides of the loop shape of the feed line.