Dimensional Scaling for Optimized CMUT Operations

Anders Lei, Søren Elmin Diederichsen, Mette Funding la Cour, Matthias Bo Stuart, Thomas Lehrmann Christiansen, Jørgen Arendt Jensen, Erik Vilain Thomsen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    This work presents a dimensional scaling study using numerical simulations, where gap height and plate thickness of a CMUT cell is varied, while the lateral plate dimension is adjusted to maintain a constant transmit immersion center
    frequency of 5 MHz. Two cell configurations have been simulated, one with a single square cell and one with an infinite array of square cells. It is shown how the radiation impedance from neighboring cells has a significant impact on the design process. For transmit optimization, both plate dimensions and gap height
    should be increased. For receive mode, the gap height should be increased while the effect of plate dimensions is ambiguous depending on if the array design is closest to a single cell or infinite array of cells. The findings of the simulations are verified by acoustical measurements on two CMUT arrays with different plate dimensions.
    Original languageEnglish
    Title of host publication2014 IEEE International Ultrasonics Symposium Proceedings
    PublisherIEEE
    Publication date2014
    Pages2595-2598
    ISBN (Print)9781479970490
    DOIs
    Publication statusPublished - 2014
    Event2014 IEEE International Ultrasonics Symposium - Hilton Hotel, Chicago, United States
    Duration: 3 Sept 20146 Sept 2014
    https://ieeexplore.ieee.org/xpl/conhome/6917616/proceeding

    Conference

    Conference2014 IEEE International Ultrasonics Symposium
    LocationHilton Hotel
    Country/TerritoryUnited States
    CityChicago
    Period03/09/201406/09/2014
    Internet address

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