Title :
P2O-1 A Three-Port Acoustic Lattice Model for Piezoelectric Transducers Containing Opposing Zones of Polarization
Author :
Ramadas, S.N. ; Hayward, G. ; Leary, R. L O ; McCunnie, T. ; Mulholland, A.J. ; Troge, A. ; Pethrick, R.A. ; Robertson, D. ; Murray, V.
Author_Institution :
Centre for Ultrasonic Eng., Strathclyde Univ., Glasgow
Abstract :
Inversion Layer Transducers (ILT) have attracted considerable interest in the recent past, due to the wide bandwidth and even harmonic sensitivity. This paper presents a new three-port lattice model for ILT devices. Based on linear systems theory, a discrete bi-directional lattice is used to describe the mechanical wave propagation and continuous transfer function to represent the electrical parameter. The mathematical formulation for an ILT configuration, and a straightforward physical interpretation of the lattice model is presented. A selection of experimental and simulation results are included to demonstrate the feasibility of the technique
Keywords :
elastic waves; inversion layers; lattice dynamics; piezoelectric transducers; transfer functions; ultrasonic transducers; ILT devices; ILT harmonic sensitivity; continuous transfer function; discrete bi-directional lattice; electrical parameter; inversion layer transducers; linear systems theory; mechanical wave propagation; opposing polarization zones; piezoelectric transducers; three port acoustic lattice model; wide ILT bandwidth; Acoustic devices; Acoustic transducers; Bandwidth; Bidirectional control; Lattices; Linear systems; Mathematical model; Piezoelectric polarization; Piezoelectric transducers; Transfer functions;
Conference_Titel :
Ultrasonics Symposium, 2006. IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-0201-8
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2006.479
