| 摘要 |
<p>An RFID systemcomprising: an RFID tag, an exciter, and an RFID reader. The RFID tag is an active RFID tag operating at an UHF band and being connected to an energy source for energizing the RFID tag, the RFID tag further comprising at least one tag antenna for wireless communication at an UHF band with the RFID reader, wherein the RFID tag is configured to have a semi- passive state and a ready state, the semi-passive state being arranged to change into the ready state by an UHF (Ultra High Frequency)wake-up signal received by the tag antenna, and said RFID reader comprising at least one antenna for wireless communication with the tag antenna,the exciter being arranged to generate and send the UHF wake up signal for changing the RFID tag from the semi-passive state to the ready state, and the RFID reader sending and/or receiving data with the RFID tag in the ready state.</p> |
