Reader antenna including resonators for HF RFID detection

Megdouda Benamara (1) , Marjorie Grzeskowiak (1) , Gaelle Bazin Lissorgues (1) , A. Diet (2) , Yann Le Bihan (2) , Christophe Conessa (2)

1 ESYCOM - Electronique, Systèmes de communication et Microsystèmes
2 GeePs - Laboratoire Génie électrique et électronique de Paris

In this article, HF RFID reader antenna including small resonant coil, operating with the magnetic coupling with the reader coil, is reported. The proposed system is used to improve surface and volume of small tag detection. The performances of such system are validated by maximization of input impedance (load modulation principle) and equivalent mutual inductance between the reader dual-coils and the tag coil compared to a conventional RFID reader antenna. Analytical formulas of theses parameters are developed. The proposed system is validated by detection measurements in parallel and perpendicular configurations between the reader and the tag coils.

Keywords: HF; Detection; Magnetic coupling; RFID

Domains: Electromagnetism

Megdouda Benamara, Marjorie Grzeskowiak, Gaelle Bazin Lissorgues, A. Diet, Yann Le Bihan, et al.. Reader antenna including resonators for HF RFID detection. 2016 Loughborough Antennas & Propagation Conference (LAPC), Nov 2016, Loughborough, United Kingdom. pp.1-5, ⟨10.1109/LAPC.2016.7807592⟩. ⟨hal-01691605⟩