On the Use of 3D-printed Ultrasonic Horns to Tune the Frequency Response of Airborne MEMS Transducers

Gabriele Bosetti, Stefan Hofstetter-Spona, Gabriele Schrag

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

This paper shows how mm-sized 3D-printed ultrasonic horns can be employed to tune the frequency response of airborne MEMS ultrasonic transducers. We present a system integration approach, which we conceptualized with the help of a physics-based compact model for the prediction of the full-system behavior. Simulation results are compared to dynamic optical measurements for three exemplary horn geometries of same length. We demonstrate how small differences in the mouth size of the ultrasonic horn influence substantially the frequency response of a membrane-based piezoelectric transducer operated in transmitting mode, that is the position and peak height of its resonant frequencies. This work lays the foundation for the development of airborne ultrasonic transceivers with tailored acoustic characteristics by means of properly designed ultrasonic horns of dedicated shape and length.

Original languageEnglish
Title of host publication2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages873-876
Number of pages4
ISBN (Electronic)9784886864352
StatePublished - 2023
Event22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023 - Kyoto, Japan
Duration: 25 Jun 202329 Jun 2023

Publication series

Name2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023

Conference

Conference22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023
Country/TerritoryJapan
CityKyoto
Period25/06/2329/06/23

Keywords

  • Airborne Ultrasound Transducers
  • Compact Modeling
  • Tailored Frequency Response
  • Ultrasonic Horns

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