Design of a planar slot tag antennas with circular polarization for ultra‐high frequency radio frequency identification applications

Abdallah, Essia Ben; Egels, Matthieu; Bergeret, Emmanuel; Benzaïm, O.; Pannier, P.

doi:10.1002/mop.31573

Cited by 2 publications

(1 citation statement)

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“…As shown in this figure the reading ranges measured for D1 are between 16.1 and 16.35 m at all CP frequencies (863 to 869 MHz). For D2, the values of RR are between 11.3 and 11.78 m. To insure the matching between the simulated and measured AR, the equation ( 4) is used to calculate the measured AR through the measured RR D1 and RR D2 [12].…”

Section: Resultsmentioning

confidence: 99%

Design of a Resistant Circularly Polarized Tag Antenna with high performances in the EU UHF RFID band

Jebbawi

Afyf

Egels

et al. 2020

2020 14th European Conference on Antennas and Propagation (EuCAP)

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In this study, a novel resistant Radio Frequency IDentification (RFID) tag with high performances is presented. The proposed tag consists of two antennas. The first one is an inductive antenna used for matching the imaginary part of the chip impedance at the target frequency. The second antenna is coupled with the first one in order to increase the gain and improve the tag performances. The tag antennas are designed to operate in the EU Ultra-High Frequency (UHF) RFID band. The crossed dipole antennas technique is used to achieve the Circular Polarization (CP) in the operating band. Many prototypes have been manufactured, and good agreement between simulations and measurements has been achieved. The band covered for an Axial Ratio (AR) < 3 dB is from 863 to 869 MHz. The Read Range (RR) of the tag has been measured in a standard anechoic chamber. From the measured results in EU RFID band, the tag has a maximum RR of about 16.35 m at 868 MHz.

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Section: Resultsmentioning

confidence: 99%