Design of an Ultra-Wideband UHF RFID Reader Antenna for Wearable Ankle Tracking Applications

Khodor Jebbawi (1) , Matthieu Egels (1) , Philippe Pannier (1)

1 IM2NP - Institut des Matériaux, de Microélectronique et des Nanosciences de Provence

In this paper, a broadband reader antenna is designed and manufactured for wearable ankle strap applications. The frequency range covered for S 11 < −10 dB is from 850 MHz to 1650 MHz with dipole like radiation pattern in free space. The proposed broadband antenna is manufactured with a semi-flex (Taconic RF-35) and flexible (Kapton) substrates. A good agreement between simulations and measurements has been achieved. Prototypes performances have been tested by measuring the reading distance. The maximum reading distance obtained is about 1.46 m at 865 MHz with an output power of the transmitter (P T X) of 25 dBm. Results of functional RFID test show that the proposed antenna can be used as an RFID reader antenna when it is placed on the ankle of the human body.

Domaines: Electromagnétisme; Electronique

Khodor Jebbawi, Matthieu Egels, Philippe Pannier. Design of an Ultra-Wideband UHF RFID Reader Antenna for Wearable Ankle Tracking Applications. Progress In Electromagnetics Research C, 2020, 102, pp.253 - 264. ⟨hal-02866098⟩