Wideband rfid tag antenna
AssigneeIntermec Corporation
InventorPavel NIKITIN
Life of this patent
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Abstract
A radio frequency identification (RFID) antenna is disclosed. The RFID antenna may include: a substrate; a radiator disposed on the substrate, the radiator comprising a first electrical conductor and a second electrical conductor that perpendicularly intersect a straight edge of the radiator, the first electrical conductor and the second electrical conductor being symmetrical to each other with respect to a central point of the radiator; a loop disposed on the substrate; and a stub disposed on the substrate between the loop and the central point of the radiator.
Claims20
A radio frequency identification (RFID) antenna comprising:
- a substrate;
- a plurality of electrical conductors attached to the substrate, the plurality of electrical conductors comprising:
- a first electrical conductor;
- a second electrical conductor;
- a third electrical conductor;
- and
- a fourth electrical conductor, each of the second, third and fourth electrical conductors perpendicularly intersecting the first electrical conductor, wherein
- the second electrical conductor and the third electrical conductor comprising stubs disposed at opposite ends of the first electrical conductor, and
- the fourth electrical conductor is disposed between the second electrical conductor and the third electrical conductor, the fourth electrical conductor comprising a loop and a feeding stub disposed between the loop and the first electrical conductor.
A radio frequency identification (RFID) antenna comprising:
- a substrate;
- a radiator disposed on the substrate, the radiator comprising a first electrical conductor and a second electrical conductor that perpendicularly intersect an edge of the radiator, the first electrical conductor and the second electrical conductor being symmetrical to each other with respect to a central point of the radiator;
- a loop disposed on the substrate;
- and
- a feeding stub disposed on the substrate between the loop and the central point of the radiator.
A radio frequency identification (RFID) tag comprising:
- a substrate;
- an integrated circuit disposed on the substrate, the integrated circuit having an input terminal, the input terminal having an input impedance;
- and
- an RFID antenna disposed on the substrate, the RFID antenna having a feed terminal coupled to the input terminal of the integrated circuit, wherein the feed terminal has a terminal impedance, the RFID antenna comprising:
- a radiator disposed on the substrate, the radiator comprising a first electrical conductor and a second electrical conductor that perpendicularly intersect a straight edge of the radiator, the first electrical conductor and the second electrical conductor being symmetrical to each other with respect to a central point of the radiator;
- a loop disposed on the substrate;
- and
- a feeding stub disposed on the substrate between the loop and the central point of the radiator, wherein the feeding stub is coupled to the feed terminal.
Dependencies are inferred from the claim text.