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      Transmitting CMUT arrays without a DC bias

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      Author(s)
      Enhoş, Kerem
      Taşdelen, Akif Sinan
      Yılmaz, Mehmet
      Atalar, Abdullah
      Köymen, Hayrettin
      Date
      2019
      Source Title
      IEEE International Ultrasonics Symposium, IUS 2019
      Print ISSN
      1948-5719
      Electronic ISSN
      1948-5727
      Publisher
      IEEE Computer Society
      Pages
      750 - 753
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
      113
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      89
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      Abstract
      This study focuses on design, simulation, fabrication and measurement of transmitting CMUT arrays with unbiased mode of operation. We presented a design procedure considering the radiation pattern, Rayleigh distance and the parameters of the large signal equivalent circuit, which can be applied for different operation frequencies and applications. Large signal equivalent circuit model is used for lumped-element simulations. Harmonic balance and transient analyses are carried out with Gaussian enveloped tone burst, sinusoidal and pulse width modulation (PWM) signals with different duty cycles. Outputs of these simulations are fed in beamforming toolboxes for further verification. According to the design specifications transmitting CMUT arrays are fabricated. Corresponding experimental impedance measurements are conducted.
      Keywords
      CMUT
      Unbiased
      Array
      Half frequency
      Transmit
      Permalink
      http://hdl.handle.net/11693/52830
      Published Version (Please cite this version)
      https://dx.doi.org/10.1109/ULTSYM.2019.8926278
      Collections
      • Acoustics and Underwater Technologies Research Center (BASTA) 7
      • Department of Electrical and Electronics Engineering 3702
      • Institute of Materials Science and Nanotechnology (UNAM) 1930
      • Nanotechnology Research Center (NANOTAM) 1063
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