Title :
Polymer-metal front matching layers for ultrasonic transducers with arbitary impedance conversion
Author :
Toda, Minoru ; Thompson, Mitchell
Author_Institution :
Meas. Specialties Inc., Wayne, PA, USA
Abstract :
This paper presents a novel design principle for ultrasonic transducers, introducing multilayer polymer-metal structures which are well suited for impedance matching between high impedance piezoelectric ceramics and water or human tissue. It is shown that an inner polymer layer with an outer metal layer, when loaded by a low acoustic impedance propagation medium, acts as an efficient impedance converter.
Keywords :
biomedical transducers; biomedical ultrasonics; impedance convertors; impedance matching; multilayers; ultrasonic transducers; arbitary impedance conversion; design principle; human tissue; impedance matching; impedance piezoelectric ceramics; low acoustic impedance propagation medium; multilayer polymer-metal front matching layers; ultrasonic transducers; Acoustics; Impedance; Metals; Polymers; Surface impedance; Zirconium; design theory; impedance matching; polymer-metal;
Conference_Titel :
Ultrasonics Symposium (IUS), 2010 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4577-0382-9
DOI :
10.1109/ULTSYM.2010.5935443
