RFID READER SYSTEM AND METHOD FOR CANCELLING TX LEAKAGE SIGNALS THEREOF

摘要

PURPOSE: A transmission leakage signal removal method of an RFID reader and an RFID reader system reducing a manufacturing cost are provided to eliminate the transmission leakage signal from the transmission leakage signal and received signal is the folded over signal. CONSTITUTION: An antenna(10) transmits and receives an RF signal. A circulator(11) transmits the transmission signal through an antenna. The circulator transmits the received signal to a receiver. A leakage signal removing unit unites the transmission leakage signal in which the phase and amplitude are varied and the received signal in which the transmission leakage signal is mixed. The leakage signal removing unit eliminates the transmission leakage signal.