Title :
An acoustic focusing device with an interdigital transducer on a thin piezoelectric plate
Author_Institution :
National Defense Academy, Yokosuka, Japan
Abstract :
A new type of Lamb wave device for acoustic focusing is presented. The device has an interdigital transducer deposited on a thin piezoelectric ceramic plate. In the device, Lamb wave is radiated from the surface without the interdigital electrodes into water and interferes constructively at a focal point in water.
Keywords :
Acoustic devices; Acoustic transducers; Acoustic waves; Ceramics; Delay lines; Electrodes; Focusing; Frequency; Piezoelectric transducers; Surface acoustic wave devices;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1979.11420
