Adaptive Beam Switching Control Algorithm for UHF RFID Reader with Beam-switched Smart Antenna

The maximum reading distance of common UHF RFID readers is about 10 meters at present, which restricts the widespread use of UHF RFID technology greatly. The application of the beam-switched smart antenna and the technique of the adaptive beam switching control algorithm which adapts to the UHF RFID system is proposed in this paper. According to the number of tags, communication time and other conditions, the proposed algorithm can adaptively control beam. Simulation results show that the proposed algorithm can reduce the recognition time and energy consumption efficiently.