Designing Capacitive Micromachined Ultrasonic Transducer (CMUT) Based Sensors for Low Frequency Airborne Applications

Sebastian Peller, Rudolf Bierl, Amelie Hagelauer

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

Abstract

We introduce a compact model for the prediction of performance figures of CMUTs prospectively used in airborne applications such as flow meters. The model comprises both a mechanical and an electrical approach resulting in a set of four parameters: resonance frequency, Q-factor, static capacitance and pull-in voltage. A small set of exemplary CMUTs has been intensively characterized by means of LDV and LCR measurements, eventually confirming the precision of the proposed prediction model.

Original languageEnglish
Title of host publication2024 IEEE Sensors, SENSORS 2024 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350363517
DOIs
StatePublished - 2024
Event2024 IEEE Sensors, SENSORS 2024 - Kobe, Japan
Duration: 20 Oct 202423 Oct 2024

Publication series

NameProceedings of IEEE Sensors
ISSN (Print)1930-0395
ISSN (Electronic)2168-9229

Conference

Conference2024 IEEE Sensors, SENSORS 2024
Country/TerritoryJapan
CityKobe
Period20/10/2423/10/24

Keywords

  • CMUT model
  • Q-factor
  • airborne ultrasound
  • capacitance
  • pull-in voltage
  • resonance frequency

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