According to the power consumption of 2.4 GHz active RFID tag

the paper proposes a dynamic frequency modulation low power design method.Tag uses NXPs LPC1758 MCU and TIs CC2520 RF chip.The frequency is controlled by changing CPU clock source

configuring PLL value and CPU clock frequency divider.Tag adjusts the CPU clock frequency adaptively according to the characteristics of the code fragment operation.It is found that the power consumption on standby of the tag of dynamic frequency CPU is half of common tag from the outcome of experiment.