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Radiating Wideband Sonar Pulses with Resonant Sandwich Transducers by Designing the Driving Voltage Waveform

AuthorsCobo, Pedro; Ranz Guerra, Carlos; Siguero Guerra, Manuel
KeywordsPulse radiation
Sandwich Transducers
Piezoelectric Transducers
Driving Voltage Waveform
Resolving Power
Issue DateSep-2001
PublisherAcoustical Society of Italy
Citation17th International Congress on Acoustics, Underwater Acoustics, Ocean Acoustic Tomography, 6C.06.01
AbstractA technique to radiate short length, high resolution, pulses with conventional piezoelectric transducers is described. It consists on designing the driving voltage waveform so that the radiated pulse has a zero-phase cosine-magnitude spectrum compatible with the natural frequency response of the transducer. According to Berkhout [1], zero-phase cosine-magnitude pulses have the minimum length, maximum resolution, within a prescribed frequency band. When applied to a 9 kHz sandwich transducer, this technique decreases the pulse length from 1 ms to 0.13 ms, increases the bandwidth from 1.4 kHz to 11.25 kHz, and lowers the Q factor from 6.2 to 1.23, at the cost of 33% of amplitude loss.
DescriptionCommunication presented at the 17th International Congress on Acoustics, Rome, 2-7 September 2001.
Appears in Collections:(IFA) Comunicaciones congresos

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