Bandwidth Enhancement Strategies for Acoustic Data Transmission by Piezoelectric Transduction

Romain Gerbe, Christopher Sugino, Massimo Ruzzene, Alper Erturk, Jeffrey Steinfeldt, Samuel Oxandale, Charles Reinke, Ihab El-Kady

Research output: Contribution to journalConference articlepeer-review

Abstract

Several applications, such as underwater vehicles or waste containers, require the ability to transfer data from transducers enclosed by metallic structures. In these cases, Faraday shielding makes electromagnetic transmission highly inefficient, and suggests the employment of ultrasonic transmission as a promising alternative. While ultrasonic data transmission by piezoelectric transduction provides a practical solution, the amplitude of the transmitted signal strongly depends on acoustic resonances of the transmission line, which limits the bandwidth over which signals are sent and the rate of data transmission. The objective of this work is to investigate piezoelectric acoustic transducer configurations that enable data transmission at a relatively constant amplitude over large frequency bands. This is achieved through structural modifications of the transmission line, which includes layering of the transducers, as well as the introduction of electric circuits connected to both transmitting and receiving transducers. Both strategies lead to strong enhancements in the available bandwidth and show promising directions for the design of effective acoustic transmission across metallic barriers.

Original languageEnglish
JournalIEEE International Ultrasonics Symposium, IUS
DOIs
StatePublished - 2021
Event2021 IEEE International Ultrasonics Symposium, IUS 2021 - Virtual, Online, China
Duration: 11 Sep 201116 Sep 2011

Keywords

  • acoustic transmission
  • bandwidth enhancement
  • piezoelectric transduction
  • through-wall data transmission

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