Novel Mechanical Coupling Piezoelectric Micromachined Ultrasonic Transducers Based on Base Excitation System

Tingzhong Xu, Libo Zhao, Dejiang Lu, Zhikang Li, Na Zhao, Zhuangde Jiang

    Publikation: Konferenzband/Beitrag in Buch/BerichtKapitelBegutachtung

    Abstract

    This paper presented a novel piezoelectric micromachined ultrasonic transducer (PMUT) based on mechanical coupling between an annular diaphragm and a circular diaphragm stacking together. The circular diaphragm whose pedestal grounded on the middle of the annular diaphragm, which formed a base excitation system. Compared to non-coupled traditional circular diaphragm PMUTs, the proposed PMUTs achieved higher transmission sensitivity by 173% with the resonant frequency of 6.14 MHz in water, due to the base excitation amplification of the circular diaphragm. Also, the array transmission performance of the proposed PMUT and non-coupled traditional PMUT with circular diaphragm was compared in the same array dimension. The results indicated that the array composed by the proposed PMUT had less cross-Talk effect, which kept the central working frequency almost the same when it work solely.
    OriginalspracheEnglisch
    TitelNEMS 2018 - 13th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems
    Herausgeber (Verlag)Institute of Electrical and Electronics Engineers Inc.
    Seiten216-220
    Seitenumfang5
    ISBN (Print)9781538652732
    DOIs
    PublikationsstatusVeröffentlicht - 3 Dez. 2018

    Publikationsreihe

    NameNEMS 2018 - 13th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems

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