Design of RFID Reader PLL Circuit Based on LMX2315

Phase locked loop (PLL) has been widely used in communication system. This paper designs the PLL circuit based on digi-tal frequency synthesizer LMX2315, which aims at the requirement and the character of UHF RFID reader. Then it presents pseudo-random frequency-hopping program flow chart of PLL. Simulation results show that this PLL circuit has good performance and can be applied to the practical RFID reader circuit.