| 摘要 |
An RFID card is provided to increase the transmission efficiency of information saved in a micro chip by winding an antenna coil composed of a number of wires several times with a certain interval. The RFID card of the present invention comprises: a first antenna coil (206) electrically connected to one side of a micro chip (204) and composed of a number of wires that wind around one side of the top of a base sheet (202) to transmit product information saved in the micro chip (204); a second antenna coil (208) extended from the end of the first antenna coil (206) composed of a number of wires and composed of a number of wires that wind around one side of the top of the base sheet (202) with a certain interval from the first antenna coil (206) composed of a number of wires to transmit product information saved in the micro chip (204); and a third antenna coil (210) extended from the end of the second antenna coil (208) composed of a number of wires and composed of a number of wires that wind around one side of the top of the base sheet (202) with a certain interval from the second antenna coil (208) composed of a number of wires to transmit product information saved in the micro chip (204). |
