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Study and realization of a multi-antenna system at 13.56 MHz for the location of connected objects

Technological challenge: Communication networks, IOT, radiofrequencies and antennas (learn more)

Department: Département Systèmes (LETI)

Laboratory: Laboratoire Antennes, Propagation, Couplage Inductif

Start Date: 01-09-2022

Location: Grenoble

CEA Code: SL-DRT-22-0381

Contact: francois.frassati@cea.fr

In recent years, connected objects have been experiencing a new boom with the arrival of NFC technologies on mobile phones. The query of the object (tag, map, etc.) is usually done in the immediate vicinity or in contact with the terminal. We propose in this thesis to design an extended connected surface allowing to simultaneously query and locate different tags or target objects in its vicinity; To do this, it is necessary to design a matrix of HF inductive antennas coupled in the near field and to define a careful control scheme (temporal multiplexing or multichip) allowing an unambiguous localization; The first theoretical approach will be based on simulations under HFSS and then different models of antenna network and pilot maps will be realized and measured. The topic has interesting spin-offs in the area of IOT (smart display)

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