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Abstract:
An ultrahigh-frequency (UHF) radio frequency identification (RFID) tag antenna that can be placed on a metal surface with stable performance is proposed. It is made of a modified dipole with two cylindrical metal grounds on both ends. The cylindrical metal grounds not only enable the antenna to roll freely on a metal surface with a stable reading performance, but also reduce the antenna's length. The proposed tag antenna maintains a small size with a diameter of 10 mm (0.031 lambda) and a length of 45 mm (0.137 lambda). With an effective isotropic radiated power (EIRP) of 4W, experimental results demonstrate that the proposed tag can achieve a maximum read distance ranging from 9.1 to 11.7 m when the tag rolls on a metal surface. The tag has the advantages of a more compact size, better reading range, and excellent rolling capability on a metal surface in comparison with the state-of-the-art. These features fulfill the emerging demands in the industrial Internet of Things field.
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IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
ISSN: 1536-1225
Year: 2024
Issue: 7
Volume: 23
Page: 2101-2105
3 . 7 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 2
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