Passive UHF RFID system evaluation in a retail environment

Hadi Farhat (1) , Plamen Iliev , Philippe Mariage (1, 2) , Nathalie Rolland (3, 1)

1 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
2 CSAM - IEMN - Circuits Systèmes Applications des Micro-ondes - IEMN
3 IRCICA - Institut de Recherche sur les Composants logiciels et matériels pour l'Information et la Communication Avancé - UAR 3380

The work in this paper presents the study of the influence of a particular environment on the performances of passive UHF RFID tags attached to products presented in a retail store. The effects of the near-field environment and of the far field environment are successively and separately highlighted by comparing the results of measurements carried out in different kinds of configurations. Those configurations are respectively the case of a tag alone, a tag attached to an item, 600 tagged items arranged on shelves in an anechoic chamber and then in a real store. This approach reveals a similar behavior of groups of tags which could enhance the detection even when placed among hundreds of others. Free Space and 2-rays path loss Models are used to show that multipath may be profitable for the link budget in realistic scenarios.

Mots clés: Friis equation; Link budget; Retail; system performance; Tagged items; UHF passive RFID

Domaines: Sciences de l'ingénieur [physics]

Hadi Farhat, Plamen Iliev, Philippe Mariage, Nathalie Rolland. Passive UHF RFID system evaluation in a retail environment. 2nd International Multidisciplinary Conference on Computer and Energy Science (SpliTech), Jul 2017, Split, Croatia. pp.111-116. ⟨hal-03270105⟩