Lumped element modeling of CMUT arrays in collapsed mode

Date
2014-09
Advisor
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Source Title
IEEE International Ultrasonics Symposium, IUS
Print ISSN
Electronic ISSN
Publisher
IEEE
Volume
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Pages
309 - 312
Language
English
Type
Conference Paper
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Abstract

This study focuses on modeling collapsed modeoperation of CMUT arrays, and obtaining a small signal lumped element model for collapsed mode operation. Having the large signal model for single CMUT from previous studies, the mutual radiation impedance is presented for the collapsed mode, and a large signal model for a CMUT array is obtained for simulating the operation in both uncollapsed and collapsed modes. For faster computation, a small signal model for a CMUT cell is derived by linearizing the collapsed mode operation at a given bias point, and the computation time is reduced significantly. Using this model we are able to simulate a large array of collapsed CMUT cells. © 2014 IEEE.

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Keywords
Acoustics, Ultrasonics, Bias points, Computation time, Large arrays, Large signal modeling, Lumped element model, Mode operation, Radiation impedance, Small signal model, Heterojunction bipolar transistors
Citation
Published Version (Please cite this version)