Lumped element modeling of CMUT arrays in collapsed mode
Author
Aydoğdu, Elif
Özgürlük, A.
Atalar, Abdullah
Köymen, Hayrettin
Date
2014-09Source Title
IEEE International Ultrasonics Symposium, IUS
Publisher
IEEE
Pages
309 - 312
Language
English
Type
Conference PaperItem Usage Stats
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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.
Keywords
AcousticsUltrasonics
Bias points
Computation time
Large arrays
Large signal modeling
Lumped element model
Mode operation
Radiation impedance
Small signal model
Heterojunction bipolar transistors