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Miniaturized RFID Tag Antenna Operating at 915 MHz

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4 Author(s)
Soliman, E.A. ; Phys. Dept., American Univ. in Cairo (AUC), New Cairo, Egypt ; Sallam, M.O. ; De Raedt, W. ; Vandenbosch, G.A.E.

A novel miniaturized radio frequency identification (RFID) tag antenna is introduced in this letter. The antenna is designed to operate at 915 MHz. Its electrical size is (λ0/30)×(λ0/30), which makes it among the smallest antennas presented in literature. The new antenna has a “Vivaldi-like” aperture fed with a slot line coupled electromagnetically to a microstrip line. The aperture is loaded with a meander line. The new antenna is thoroughly investigated both theoretically and experimentally. It enjoys a number of appealing characteristics, such as compact size, low profile, flexible impedance tuning, good impedance bandwidth, omnidirectional radiation patterns, low cross-polarization level, and reasonable gain.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )