Ultrasonic Transducer for Broadband Applications

  • A. S. Fiorillo
  • S. A. PullanoEmail author
  • M. Menniti
  • M. G. Bianco
  • C. D. Critello
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 629)


In-air sonar system takes advantage of transducers based on different materials and technologies for navigation in unstructured and harsh environments. Most technologies suffer from a limited frequency band and a lack of versatility in those applications where a detailed set of information is required. Herein, we propose an ultrasonic sensor inspired by bats’ cochlear structure, characterized by broadband (i.e. 30–95 kHz). The transducer is manufactured by folding a thin film of Polyvinylidene Fluoride, according to a logarithmic spiral geometry. Besides the bandwidth, experimental results showed that the ultrasonic transducer working in the bimodal configuration, is characterized by omnidirectional pattern, capable of reproducing the spectrogram of most echolocating bats.


Ferroelectric polymer Piezoelectricity Cochlea Ultrasonic transducers Biosonar 


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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • A. S. Fiorillo
    • 1
  • S. A. Pullano
    • 1
    Email author
  • M. Menniti
    • 1
  • M. G. Bianco
    • 1
  • C. D. Critello
    • 1
  1. 1.BATS Laboratory, Department of Health SciencesUniversity Magna Græcia of CatanzaroCatanzaroItaly

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