On the efficacy of in-probe pre-amplifiers for piezoelectric 2D arrays

被引：9

作者：

Boni, Enrico ^{[1
]}

Fool, Fabian ^{[2
]}

Verweij, Martin D. ^{[2
,3
]}

Vos, Hendrik J. ^{[3
]}

Tortoli, Piero ^{[1
,2
]}

机构：

[1] Univ Florence, Informat Engn Dept, Florence, Italy

[2] Delft Univ Technol, Med Imaging Imaging Phys Appl Sci, Delft, Netherlands

[3] Univ Med Ctr Rotterdam, Erasmus MC, Biomed Engn, Dept Cardiol, Rotterdam, Netherlands

来源：

PROCEEDINGS OF THE 2020 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS) | 2020年

基金：

荷兰研究理事会;

关键词：

3D imaging; matrix array; sparse array; in-probe preamplifiers;

D O I：

10.1109/ius46767.2020.9251800

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Transducer arrays for 3D imaging are characterized by elements distributed over a 2D surface. The dimensions of each element are typically one half-wavelength in both x- and y-directions. Such small elements inherently have a high electrical impedance. When the elements are connected to a probe cable, the high cable capacitance decimates the delivered voltage and results in a poor Signal to Noise Ratio (SNR). This may have dramatic effects, especially in sparse arrays, where a small number of elements contributes to the beamformed signal. In this paper we demonstrate that the use of in-probe preamplifiers in a sparse PZT probe is valuable to significantly increase the SNR.

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页数：4

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