| 摘要 |
Disclosed is a low power dual band active electronic tag. The low power dual band active electronic tag according to the present invention relates to an electronic tag comprising; a first antenna which receives a signal of a first frequency band from an active electronic tag identification device; and a second antenna which transmits and receives a signal of a second frequency band. The low power dual band active electronic tag comprises; a wake-up signal generating unit capable of generating induced electromotive force which is induced from the signal of the first frequency band as a wake-up signal; and a micro control unit (MCU) which converts an electronic tag from a sleep mode to a wake-up mode if the wake-up signal is generated and transmits and receives the signal of the second frequency band through the second antenna. The MCU determines whether to convert the signal of the second frequency band from the wake-up mode to the sleep mode or not. The signal of the second frequency is in the sleep mode if communications with the active electronic tag identification device is not needed. The signal of the second frequency is converted into the wake-up mode if the communications are needed. Therefore, a battery of an active electronic tag can be used for a long time because low power standby is possible. |
