Conference paper Open Access

Passive UHF RFID tag for spectral fingerprint measurement

Escobedo-Araque, Pablo; Martinez-Olmos, Antonio; Carvajal, Miguel Angel; Palma, Alberto J.; Fernandez-Salmeron, Jose

This work presents the design, fabrication and characterization of a fully passive radiofrequency identification tag in the ultra-high frequency band with multiple optical sensing capabilities. This tag includes five photodiodes to cover a wide spectral range from near infrared to visible and ultraviolet spectral regions. A microcontroller based switch has been implemented to measure in the same access the five magnitudes coming from the optical sensors, providing a spectral fingerprint of the incident electromagnetic radiation.
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