Title :
FDTD simulation of SAW RFID tags
Author :
Nova, Omar ; Pena, N. ; Ney, Michel
Author_Institution :
Electr. & Electron. Eng. Dept., Univ. of Los Andes, Bogota, Colombia
Abstract :
FDTD simulation of a Surface Acoustic Wave (SAW) RFID tag is presented. The simulated tag consists of a single-electrode Inter-digital Transducer (IDT) with ten electrodes and three single-electrode reflectors, printed on the surface of a 128°YX Lithium Niobate (LiNbO3) piezoelectric substrate. FDTD modeling is done considering the multyphisics nature of the problem, by combining the electromagnetic and the elastodynamics theory in order to obtain the piezoelectric governing equations. Simulation results allow determining the time-position and insertion loss of SAW echoes, which enables the determination of the ID code stored in the tag.
Keywords :
elastodynamics; electromagnetic field theory; finite difference time-domain analysis; interdigital transducers; radiofrequency identification; surface acoustic wave transducers; FDTD simulation; ID code; IDT; LiNbO3; SAW RFID tags; elastodynamics theory; electromagnetic theory; insertion loss; piezoelectric governing equations; piezoelectric substrate; single-electrode interdigital transducer; single-electrode reflectors; surface acoustic wave; time-position; Equations; Finite difference methods; Insertion loss; Mathematical model; Radiofrequency identification; Surface acoustic waves; Time domain analysis;
Conference_Titel :
RFID-Technologies and Applications (RFID-TA), 2012 IEEE International Conference on
Conference_Location :
Nice
Print_ISBN :
978-1-4673-4656-6
Electronic_ISBN :
978-1-4673-4658-0
DOI :
10.1109/RFID-TA.2012.6404525
