RADIO FREQUENCY IDENTIFICATION ANTENNA SYSTEM USING SCRAMBLED SIGNAL AND COMMUNICATION APPARATUS CONTAINING THE RADIO FREQUENCY IDENTIFICATION ANTENNA SYSTEM

摘要

An RFID antenna system using interference signals and a communication device including the same are provided to minimize interference between antennas or RFID readers by using an antenna having a narrow beam width. The first antenna(201) and the second antenna(202) have the circular polarization property so that stable RF communication between an RFID reader and an RFID tag is possible although the tag and reader are not arranged properly. An RFID reader module(205) is connected to the first distributor(203). An interference signal apparatus(206) is connected to the second distributor(204). The first distributor is connected to the first and second antennas. The second distributor is connected to the first and second antennas. The RFID reader module generates and outputs an RF signal for a tag information request. The interference signal apparatus generates and outputs an RF signal to be used as an interference signal.