Title :
Time and frequency domain performance of ultrasonic transducers
Author :
Lal, Ravendar ; Das-Gupta, D.K.
Author_Institution :
Sch. of Electron. Eng. Sci., Univ. Coll. of North Wales, Bangor, UK
Abstract :
Methods used in the analysis of piezoelectric transducers for high-frequency applications are discussed. The influence of mechanical and electrical loading on transducers constructed from PZT (lead zinc titanate) and PVDF (poly(vinylidene fluoride)) are evaluated in the time domain. Frequency-domain information is acquired by the use of a fast Fourier transform algorithm. The effects of excitation/reception circuitry on a transducer operated in its thickness mode are also studied. The results are compared with theoretical simulation plots, calculated using Z-transform techniques
Keywords :
lead compounds; piezoelectric transducers; polymers; ultrasonic transducers; PVDF; PZT; PbZrO3TiO3; Z-transform techniques; electrical loading; excitation/reception circuitry; fast Fourier transform algorithm; frequency domain performance; high-frequency applications; mechanical loading; piezoelectric transducers; poly(vinylidene fluoride); theoretical simulation plots; thickness mode; time domain performance; ultrasonic transducers; Acoustic devices; Acoustic transducers; Biomedical acoustics; Coaxial cables; Educational institutions; Electrodes; Frequency domain analysis; Piezoelectric transducers; Switching circuits; Ultrasonic transducers;
Conference_Titel :
Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)
Conference_Location :
Oxford
DOI :
10.1109/ISE.1988.38600
