Title :
8E-5 Full 3D SAW IDT Boundary Element Model for Massless Electrodes
Author :
Jerez-Hanckes, Carlos ; Laude, V. ; Nédélec, J.C. ; Lardat, R.
Author_Institution :
Ecole Polytech., Palaiseau
Abstract :
We present a boundary element model for calculating the mechanical displacements and surface charge distribution for SAW IDTs assuming perfect flat conductors with null mass. For this, we take into account the full 3D piezoelectric surface Green´s dyad and solve the integral equation for the electric surface charge when a potential over the metallized area is known using a hybrid elements model. We then observe preliminary results for the charge distribution using the actual G44 component and give a simple formulation for the mechanical displacements.
Keywords :
Green´s function methods; boundary-elements methods; electrodes; piezoelectricity; surface acoustic wave transducers; surface charging; ultrasonics; 3D SAW IDT boundary element model; 3D piezoelectric surface; Green dyad; electric surface charge; hybrid elements model; massless electrode; mechanical displacement; surface acoustic waves interdigital transducers; surface charge distribution; Acoustic transducers; Acoustic waves; Conductors; Electrodes; Electrostatics; Green´s function methods; Integral equations; Metallization; Prototypes; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 2007. IEEE
Conference_Location :
New York, NY
Print_ISBN :
978-1-4244-1384-3
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2007.182
