Title :
Tunable sandwich transducer
Author :
Jain, S.K. ; Smith, B.V.
Author_Institution :
Dept. of Electron. & Electr. Eng., Birmingham Univ.
fDate :
3/17/1988 12:00:00 AM
Abstract :
A tunable sandwich transducer is reported which has its fundamental resonant frequency controlled by varying a passive reactive load. The structure consists of four PZT-4 rings sandwiched between an aluminium head-mass and a brass tail-mass. The electromechanical coupling coefficient and the radiation efficiency into water of the transducer are given over the frequency range 25 to 75 kHz. A theoretical analysis based on an electromechanical equivalent circuit shows good agreement with the experimental results
Keywords :
equivalent circuits; piezoelectric transducers; 25 to 75 kHz; Al head mass; PZT-4 rings; brass tail-mass; electromechanical coupling coefficient; electromechanical equivalent circuit; fundamental resonant frequency; passive reactive load; radiation efficiency; tunable sandwich transducer;
Journal_Title :
Electronics Letters
