3D printed wearable sensor tag based on UHF RFID ICs implementing a novel interrogation modality

In this work a 3D-printed wearable sensor tag based on a new design strategy for UHF RFID tags mounting RFID chips with embedded sensor is proposed. In particular, a novel functioning mode, compatible with the integration in ICs and named 'Pseudo-BAP' is introduced to solve the electromagnetic 'filed-off' problem and to allow for a fully Gen2-compliant tag interrogating sequence to retrieve sensor data. A prototype of Pseudo-BAP-empowered wearable sensor tag has been designed, 3D printed in Polilactic Acid (PLA) and fully tested from the electromagnetic point of view. © 2018 IEEE