Research on high-frequency broad-band cylindrical transducer

The piezoelectric cylindrical ceramic transducers are widely used for underwater applications,which mostly exploit the radial resonance mode.The broadband projecting performance is achieved by applying the radial resonance mode and the high order mode of the piezoelectric cylindrical tube.Piezoelectric cylindrical transducer has been studied with finite element method.The finite element model of transducer is set up with ANSYS software and the structure of the transducer is optimized.A final transducer based on the above research achieves the radial resonance of 47.5kHz.The bandwidth of transducer is 40-80kHz,in which the ripple of the transmitting voltage response does not exceed ±4dB and the maximum of the transmitting voltage response is 150dB.It shows a good agreement between the finite element method and the testing results.The transducer achieves the projecting performance of high-frequency,broad-band,horizontal direction independent beam pattern.