Diffraction in the reflective SAW tags

Diffraction in the reflective SAW tags

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 fin...

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Veröffentlicht in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2010-01, Vol.57 (1), p.133-139
1. Verfasser: Sveshnikov, B.
Format: Artikel
Sprache:eng
Schlagworte:
Acoustic devices
Acoustic diffraction
Acoustic pulses
Acoustics - instrumentation
Apertures
Attenuation
Beams (radiation)
Collaboration
Computer Simulation
Diffraction
Equipment Design
Equipment Failure Analysis
Exact solutions
Manufactured Materials - analysis
Mathematical analysis
Micro-Electrical-Mechanical Systems - instrumentation
Models, Chemical
Niobium - chemistry
Oxides - chemistry
Physics
Piezoelectricity
Radio Frequency Identification Device
Reflector antennas
Refractometry - instrumentation
Scattering, Radiation
Surface acoustic wave devices
Surface acoustic waves
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Zusammenfassung: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°-LiNbO 3 .
ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2010.1389