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Passive RFID Strain-Sensor Based on Meander-Line Antennas

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3 Author(s)
Occhiuzzi, C. ; Dipt. di Inf. Sist. e Produzione, Univ. of Roma Tor Vergata, Rome, Italy ; Paggi, C. ; Marrocco, G.

The processing of backscattered signals coming from RFID tags is potentially useful to detect the physical state of the tagged object. It is here shown how to design a completely passive UHF RFID sensor for strain monitoring starting from a flexible meander-line dipole whose shape factor and feed section are engineered to achieve the desired sensing resolution and dynamic range. This class of devices is low-cost, promises sub-millimeter resolution and may found interesting applications in the Structural Health Monitoring of damaged structures and vehicles as well as during extreme and adverse events.

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Antennas and Propagation, IEEE Transactions on  (Volume:59 ,  Issue: 12 )