Title :
The study of high-frequency broad-band underwater transducers
Author_Institution :
Hangzhou Appl. Acoust. Res. Inst., Hangzhou, China
Abstract :
There many advantages of broadband transducers, such as reducing of signal distortion, widening the security about information transmission, reducing the ratio of false codes. The combine of piezoelectric pillars and dual matching layers can expand the bandwidth of the high-frequency transducer. The one-eighth finite element model of transducer was set up with ANSYS software and the structure of the transducer was optimized. A final transducer was designed, which used the first thickness mode, the second thickness mode and the third thickness mode. The bandwidth of the transducer is 47kHz-159kHz, in which the ripple of the transmitting voltage response does not exceed ±3dB. There are several conclusions from the research: the bandwidth of pillar transducers can be expanded by the first thickness mode, the second thickness mode and the third thickness mode, and it gives a method to achieve the broad-band projecting performance of high-frequency transducers.
Keywords :
acoustic transducers; finite element analysis; underwater equipment; underwater sound; ANSYS software; broadband projecting performance; dual matching layer; false code; frequency 47 kHz to 159 kHz; high-frequency broadband underwater transducer; information transmission; one-eighth finite element model; piezoelectric pillar; pillar transducer; signal distortion; transducer bandwidth; transmitting voltage response; Bandwidth; Broadband communication; Computational modeling; Finite element methods; Resonant frequency; Transducers; Underwater acoustics; Finite element method; High-frequency; Underwater transducers;
Conference_Titel :
Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2012 Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4673-4814-0
DOI :
10.1109/SPAWDA.2012.6464120