Title :
Diffraction in the reflective SAW tags
Author :
Sveshnikov, Boris
Author_Institution :
Lebedev Res. Center in Phys., Moscow, Russia
Abstract :
A specific feature of the acoustoelectric scattering of the nonuniform surface acoustic wave (SAW) beams by the straight metal strips placed on the piezoelectric substrates is discussed. A closed-form solution is obtained to describe the influence of diffraction on the reflective delay line with finite aperture. The found results allow us to develop the fast simulation and synthesis tool that can be applied to evaluate and compensate for the diffraction effect in SAW tags of arbitrary architectures. Efficiency of the proposed approach is illustrated by example of SAW tag synthesized on 128??-LiNbO3.
Keywords :
acoustic wave diffraction; acoustic wave reflection; acoustic wave scattering; acoustoelectric effects; piezoelectric materials; surface acoustic waves; acoustoelectric scattering; finite aperture; nonuniform surface acoustic wave beams; piezoelectric substrates; reflective SAW tag diffraction; reflective delay line; straight metal strips; Acoustic devices; Acoustic diffraction; Acoustic pulses; Apertures; Attenuation; Collaboration; Physics; Reflector antennas; Surface acoustic wave devices; Surface acoustic waves; Acoustics; Computer Simulation; Equipment Design; Equipment Failure Analysis; Manufactured Materials; Micro-Electrical-Mechanical Systems; Models, Chemical; Niobium; Oxides; Radio Frequency Identification Device; Refractometry; Scattering, Radiation;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2010.1389
