Experimental Validation of Crosstalk Minimization in Metallic Barriers with Simultaneous Ultrasonic Power and Data Transfer

Christopher Sugino, Sam Oxandale, Ahmed Allam, Christian Arrington, Christopher St John, Ehren Baca, Jeffrey Steinfeldt, Stephen Hales Swift, Charles Reinke, Alper Erturk, Ihab El-Kady

Research output: Contribution to journalConference articlepeer-review

Abstract

For systems that require complete metallic enclosures, it is impossible to power and communicate with interior electronics using conventional electromagnetic techniques. Instead, pairs of ultrasonic transducers can be used to send and receive elastic waves through the enclosure, forming an equivalent electrical transmission line that bypasses the Faraday cage effect. These mechanical communication systems introduce the possibility for electromechanical crosstalk between channels on the same barrier, in which receivers output erroneous electrical signals due to ultrasonic guided waves generated by transmitters in adjacent communication channels. To minimize this crosstalk, this work investigates the use of a phononic crystal/metamaterial machined into the barrier via periodic grooving. Barriers with simultaneous ultrasonic power and data transfer are fabricated and tested to measure the effect of grooving on crosstalk between channels.

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 power transfer
  • acoustic data transfer
  • guided waves
  • metamaterial
  • phononic crystal
  • piezoelectric

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