Tunable Near-Field Focused Circular Phase-Array Antenna for 5.8-GHz RFID Applications

Abstract : An RFID-compatible focused circular phase-array antenna working at 5.8 GHz is proposed, which is theoretically analyzed and experimentally demonstrated. It consists of 24 half-wavelength dipole antennas placed on three circles. Using only two phase-shifters, a tunable focal spot in the range of 0.4–1 m (10 lambda) is obtained. The antenna system is analyzed using the Huygens–Fresnel theory, which is compared to the experimental results. At a focal distance of 0.9 m, the measured beamwidth and focal depth are given by 0.75 lambda and 5 lambda, respectively, which are in agreement with the calculated results.
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Article dans une revue
IEEE Antennas and Wireless Propagation Letters, Institute of Electrical and Electronics Engineers, 2011, 10, pp.33-36
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https://hal.inria.fr/hal-01023136
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Soumis le : vendredi 11 juillet 2014 - 15:12:38
Dernière modification le : vendredi 11 juillet 2014 - 15:12:38

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  • HAL Id : hal-01023136, version 1

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Romain Siragusa, Pierre Lemaitre-Auger, Smail Tedjini. Tunable Near-Field Focused Circular Phase-Array Antenna for 5.8-GHz RFID Applications. IEEE Antennas and Wireless Propagation Letters, Institute of Electrical and Electronics Engineers, 2011, 10, pp.33-36. 〈hal-01023136〉

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