Coaxial rectangle ring-based dual-polarized chipless RFID tag antenna
A technology of RFID tags and rectangular rings, applied in the direction of loop antennas, antennas, antenna parts, etc., can solve the problems of unfavorable antenna miniaturization and increase in antenna size, and achieve size reduction, coding capacity improvement, and increased coding capacity Effect
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[0029] This embodiment discloses a dual-polarized chipless RFID tag antenna based on a coaxial rectangular ring, used for a chipless tag antenna in a radio frequency identification system, and includes a dielectric substrate, an X-polarized resonator and a Y-polarized resonator. The X-polarized resonator and Y-polarized resonator are printed on the same surface of the dielectric substrate.
[0030] The X-polarized resonator is formed by four coaxial rectangular rings, and every two adjacent rectangular rings are connected by two upper and lower short wires respectively connecting the upper and lower sides together. The length and width of the short wire are both 0.2mm.
[0031] The Y-polarized resonator is obtained by rotating the X-polarized resonator 90 degrees in a clockwise direction.
[0032] The dielectric substrate material adopts Teflon (Teflon, tm), the dielectric constant is 2.55, the loss tangent is 0.0014, and the thickness is 0.5 mm.
[0033] The working ...
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