CUED Publications database

Operation of a high frequency piezoelectric ultrasound array with an application specific integrated circuit

Bernassau, AL and Button, T and Choi, K and Cochran, S and Demore, C and Garcia-Gancedo, L and Hutson, D and Jackson, T and Kim, H and Kim, I and Meggs, C and Trolier-McKinstry, S and Tutwiler, R (2009) Operation of a high frequency piezoelectric ultrasound array with an application specific integrated circuit. Proceedings - IEEE Ultrasonics Symposium. ISSN 1051-0117

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Integration of a piezoelectric high frequency ultrasound (HFUS) array with a microfabricated application specific integrated circuit (ASIC) performing a range of functions has several advantages for ultrasound imaging. The number of signal cables between the array/electronics and the data acquisition / imaging system can be reduced, cutting costs and increasing functionality. Electrical impedance matching is also simplified and the same approach can reduce overall system dimensions for applications such as endoscopic ultrasound. The work reported in this paper demonstrates early ASIC operation with a piezocomposite HFUS array operating at approximately 30 MHz. The array was tested in three different modes. Clear signals were seen in catch-mode, with an external transducer as a source of ultrasound, and in pitch-mode with the external transducer as a receiver. Pitch-catch mode was also tested successfully, using sequential excitation on three array elements, and viable signals were detected. However, these were relatively small and affected by interference from mixed-signal sources in the ASIC. Nevertheless, the functionality and compatibility of the two main components of an integrated HFUS - ASIC device have been demonstrated and the means of further optimization are evident.

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 18 May 2016 17:56
Last Modified: 24 Jul 2016 04:20
DOI: 10.1109/ULTSYM.2009.5441707