Title :
Piezoceramics for high frequency (20-100 MHz) transducers and arrays
Author :
Zipparo, Michael J. ; Shung, K. Kirk ; Shrout, Thomas R.
Author_Institution :
Pennsylvania State Univ., University Park, PA, USA
Abstract :
The design and fabrication of ultrasound transducers which operate above 20 MHz is discussed in relation to piezoelectric materials and their operation at high frequencies. Measurements are made of fine scale composites with operating frequencies up to 50 MHz. Simulations are presented for plate-mode and composite-mode 2 mm diameter single element transducers and the difference in performance between various materials is discussed. Composite-mode transducers are shown to result in wider bandwidth and shorter pulse length
Keywords :
biomedical transducers; biomedical ultrasonics; composite materials; piezoceramics; piezoelectric transducers; ultrasonic transducer arrays; ultrasonic transducers; 2 mm; 20 to 100 MHz; arrays; bandwidth; composite-mode; design; fabrication; fine scale composites; high frequency transducers; piezoceramics; piezoelectric materials; plate-mode; pulse length; single element transducers; ultrasound transducers; Acoustic materials; Acoustic transducers; Biological materials; Dielectric materials; Focusing; Frequency; Grain size; Piezoelectric materials; Piezoelectric transducers; Ultrasonic transducers;
Conference_Titel :
Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-4153-8
DOI :
10.1109/ULTSYM.1997.663315
