In body-centric RFID-based applications the possibility to retrieve sensor data from RFID tags in a passive and standard way is crucial. In this work, a new fully Gen2-compliant design strategy to get the sensor data from a specific RFID chip, called 'Pseudo-BAP mode', has been implemented. Based on the use of a well-defined reader commands and on a specific circuit optimizing the energy management on board the RFID chip the Pseudo-BAP mode has been applied on a wearable sensor tag realized in 3D printing technology on Poly-lactic Acid (PLA) substrates. The electromagnetic performance of the 3D-printed structure j oint to the flexibility of the proposed 'Pseudo-BAP mode' in retrieving the sensed data demonstrate the effectiveness of the proposed approach in realizing battery-less RFID-based wearable devices. © 2018 University of Split, FESB.
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