Title :
Novel integrated impedance matching layer
Author :
Seyed-Bolorforosh, Mir Said
Author_Institution :
Hewlett-Packard Labs, Palo Alto, CA, USA
Abstract :
High performance clinical and industrial ultrasonic transducers require an impedance matching layer with controlled acoustic properties for efficient coupling of acoustic energy between the piezoelectric layer and the propagating medium. The principles of operation, design requirements and performance of a novel integrated impedance matching layer are discussed here. This integrated impedance matching layer is a composite of inert lead zirconate titanate (PZT) ceramic and conformal polymer filler material.<>
Keywords :
acoustic impedance; biomedical equipment; biomedical ultrasonics; impedance matching; lead compounds; piezoceramics; piezoelectric transducers; ultrasonic transducers; PZT; PbZrO3TiO3; acoustic energy; clinical ultrasonic transducers; composite; conformal polymer filler material; controlled acoustic properties; design requirements; efficient coupling; high performance; industrial ultrasonic transducers; inert PZT ceramic; integrated impedance matching layer; operation; performance; piezoelectric layer; propagating medium; Acoustic propagation; Acoustic transducers; Bandwidth; Bioceramics; Ceramics; Composite materials; Impedance matching; Piezoelectric transducers; Polymers; Ultrasonic transducers;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
