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Progress In Electromagnetics Research Letters
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A CIRCULARLY POLARIZED COMPACT ANTENNA FOR UHF BAND RFID READER

By Y. Li, J. Ou Yang, and P. Yang

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Abstract:
This paper presents a circularly polarized compact antenna based on the concept of Yagi-Uda antenna. By properly arranging three ring resonators operating at the fundamental mode, a compact Yagi-Uda like antenna is proposed to form directional pattern. This proposed antenna has comparable size with the ring resonator of quarter-wavelength, while the performances are comparable with the conventional microstrip antenna of half-wavelength. To validate the proposed design methodology, an antenna working at UHF radio-frequency identification (RFID) band is benchmarked. Both simulated and measured results are shown for comparison.

Citation:
Y. Li, J. Ou Yang, and P. Yang, "A Circularly Polarized Compact Antenna for UHF Band RFID Reader," Progress In Electromagnetics Research Letters, Vol. 42, 119-127, 2013.
doi:10.2528/PIERL13071509

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