Title :
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
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;
Conference_Titel :
Ultrasonics Symposium (IUS), 2009 IEEE International
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4389-5
Electronic_ISBN :
1948-5719
DOI :
10.1109/ULTSYM.2009.5441944
