DEVICE AND METHOD FOR RFID REDUCING INTERFERENCE OF METAL, AND MATERIAL USED FOR THE SAME

摘要

PURPOSE: A device and a method for an RFID(Radio Frequency Identification) reducing interference of metal, and a material used for the same are provided to reduce the interference of the metal by installing a transmitting material passing a magnetic field generated from an antenna without scattering by absorbing the magnetic field before the reflection from a surface of the metal. CONSTITUTION: Ni-Zn ferrite(300) is interposed between an internal antenna(60) and the metal surface(1000) of an RFID device. If the Ni-Zn ferrite of 125 transmittance is installed by facing to the metal surface on a system using a 13.56 MHz main frequency, the Ni-Zn ferrite uniformly passes the induced magnetic flux(200) by absorbing the induced magnetic flux before the reflection from the metal surface and by absorbing the induced magnetic flux reflected from the metal surface.