Modeling the pulse-echo response of a 2D CMUT array element

Author

Yamaner, Feysel Yalcin ; Bozkurt, Ayhan

Author_Institution

Fac. of Eng. & Natural Sci., Sabanci Univ., Istanbul, Turkey

fYear

2009

fDate

20-23 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

In this paper, we present an equivalent circuit model for a 2D CMUT array element to asses the overall pulse-echo response. The proposed circuit models the propagation medium, and incorporates reactive effects due to transducer dimensions which are comparable to the acoustic wavelength, and the effects of diffraction and loss. The model has been verified experimentally using hydrophone and pulse-echo measurements on a set-up that incorporates a high-voltage pulse generator and receive amplifier IC. The presented methodology can be used to evaluate the performance of a front-end IC within the EDA environment in which the circuit is designed.

Keywords

capacitive sensors; equivalent circuits; hydrophones; micromachining; ultrasonic transducer arrays; 2D CMUT array element; EDA environment; acoustic diffraction; acoustic loss; equivalent circuit model; front end IC; hydrophone; pulse echo response; transducer dimension; Acoustic diffraction; Acoustic propagation; Acoustic pulses; Acoustic transducers; Acoustic waves; Equivalent circuits; Integrated circuit modeling; Pulse amplifiers; Pulse circuits; Pulse measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2009 IEEE International

Conference_Location

Rome

ISSN

1948-5719

Print_ISBN

978-1-4244-4389-5

Electronic_ISBN

1948-5719

Type

conf

DOI

10.1109/ULTSYM.2009.5441944

Filename

5441944