Title :
Passive RFID Strain-Sensor Based on Meander-Line Antennas
Author :
Occhiuzzi, Cecilia ; Paggi, C. ; Marrocco, G.
Author_Institution :
Dipt. di Inf. Sist. e Produzione, Univ. of Roma Tor Vergata, Rome, Italy
Abstract :
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.
Keywords :
antenna feeds; backscatter; dipole antennas; radiofrequency identification; strain sensors; RFID tags; backscattered signals; feed section; flexible meander-line dipole; meander-line antennas; passive RFID strain-sensor; passive UHF RFID sensor; shape factor; strain monitoring; structural health monitoring; Dynamic range; Impedance; Passive RFID tags; Radiofrequency identification; Sensitivity; Passive sensor; sensor RFID tag; strain gauge; strain measurement;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2011.2165517
