Provided is a receiver of a passive radio frequency identification (RFID)
reader, which eliminates a leakage signal from a reception signal
comprised of a RFID tag response signal and the leakage signal. The
receiver includes a phase adjustment unit adjusting a local oscillation
signal received from a frequency synthesizer to have a phase difference
of a predetermined angle from the leakage signal. Since the phase
adjustment unit adjusts the phase difference, the leakage signal input to
the receiver of the RFID reader can be eliminated. Consequently, the
performance of the receiver can be enhanced.