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An equivalent circuit model for transmitting capacitive micromachined ultrasonic transducers in collapse mode
(IEEE, 2011)
The collapse mode of operation of capacitive micromachined ultrasonic transducers (CMUTs) was shown to be a very effective way to achieve high output pressures. However, no accurate analytical or equivalent circuit model ...
Designing circular CMUT cells using CMUT biasing chart
(IEEE, 2012-10)
A very accurate equivalent circuit model for circular CMUT cell is recently proposed. As a consequence of this model, the operating characteristics of the cell is derived and presented as a biasing chart for CMUTs. We ...
A novel equivalent circuit model for CMUTs
(IEEE, 2009-09)
A nonlinear equivalent circuit for immersed transmitting capacitive micromachined ultrasonic transducers (CMUTs) is presented. The velocity profile across the CMUT surface maintains the same form over a wide frequency ...
Equivalent circuit-based analysis of CMUT cell dynamics in arrays
(IEEE, 2013)
Capacitive micromachined ultrasonic transducers (CMUTs) are usually composed of large arrays of closely packed cells. In this work, we use an equivalent circuit model to analyze CMUT arrays with multiple cells. We study ...
An improved lumped element nonlinear circuit model for a circular CMUT cell
(IEEE, 2012)
This paper describes a correction and an extension in the previously published large signal equivalent circuit model for a circular capacitive micromachined ultrasonic transducer (CMUT) cell. The force model is rederived ...
An equivalent circuit for collapse operation mode of CMUTs
(IEEE, 2010)
Collapse mode of operation of the capacitive mi-cromachined ultrasonic transducers (CMUTs) was shown to be a very effective way for achieving high output pressures. However, no accurate model exists for understanding the ...
Parametric nonlinear lumped element model for circular CMUTs in collapsed mode
(2014)
We present a parametric equivalent circuit model for a circular CMUT in collapsed mode. First, we calculate the collapsed membrane deflection, utilizing the exact electrical force distribution in the analytical formulation ...
Calculation of transformer ratio in mason's equivalent circuit for cMUTs
(IEEE, 2006)
We present a new method to calculate the transformer ratio of a cMUT in Mason's Equivalent circuit model. The effect of the spring softening capacitance is also included in the analysis. We use the existing turns ratio ...
Bilateral CMUT cells and arrays: equivalent circuits, diffraction constants, and substrate impedance
(Institute of Electrical and Electronics Engineers Inc., 2017)
We introduce the large-signal and small-signal equivalent circuit models for a capacitive micromachined ultrasonic transducer (CMUT) cell, which has radiating plates on both sides. We present the diffraction coefficient ...