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      • Department of Electrical and Electronics Engineering
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      Lumped element model of single CMUT in collapsed mode

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      Author
      Aydoğdu, Elif
      Ozgurluk, A.
      Oguz H.K.
      Atalar, Abdullah
      Köymen, Hayrettin
      Date
      2013
      Source Title
      2013 IEEE International Ultrasonics Symposium (IUS)
      Publisher
      IEEE
      Pages
      283 - 286
      Language
      English
      Type
      Conference Paper
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      Abstract
      In this study, an equivalent electrical circuit model for a single circular CMUT in both uncollapsed and collapsed modes is obtained. In order to model the collapsed mode mechanics, the governing differential equation is solved semi-analytically for a large number of normalized cases. Then the calculations are adapted to the equivalent electrical circuit model. The model uses the self radiation impedance of both uncollapsed and collapsed modes. The model is fully parametric in such a way that a CMUT cell of given dimensions and parameters can be simulated under an arbitrary large signal excitation. Transient simulations can be performed in less than a minute with a circuit simulator. Transient and frequency domain simulations are consistent with finite element analysis results. © 2013 IEEE.
      Permalink
      http://hdl.handle.net/11693/27936
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/ULTSYM.2013.0073
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      • Department of Electrical and Electronics Engineering 3601
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