| 摘要 |
A radio-frequency identification (RFID) system including an RFID tag and an RFID-enabled object. The RFID tag may include a pair of antennas and an RFID circuit. The antennas receive activation energy from a reader, and the RFID circuit modulates tag energy when activation energy is received by one of the antennas. The tag may also include a transmission line for operatively coupling the RFID circuit to the antennas. A first one of the antennas may receive activation energy which, in turn, may be radiated by a second one of the antennas. The second antenna may also receive tag energy radiated by an antenna of another RFID tag. The received tag energy may then be radiated by the first antenna. Accordingly, when a plurality of the RFID tags are positioned in sequence in operative proximity with each other, activation energy may be propagated through the sequence from one RFID tag to another in one direction, and tag energy may be propagated through the sequence from one RFID tag to another in another direction.
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