| 摘要 |
A radio frequency identification (RFID) tag antenna in a U shape, having constant near-isotropic characteristics in a broadband. The RFID tag antenna includes a dipole antenna in a U shape, including a plurality of first conducting wires having a first width and separated from and parallel to each other with a first gap and a second conducting wire having a second width and connecting the plurality of first conducting wires; and a feed unit connected to the second conducting wire and located between the plurality of first conducting wires. The RFID tag antenna further includes the dipole antenna in a U shape and the feed unit disposed in the dipole antenna in a U shape, thereby having the constant near-isotropic characteristics in the broadband.
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