Multiple matching scheme for broadband 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 single crystal phased-array transducer

被引：50

作者：

Lau, S. T. ^{[1
]}

Li, H. ^{[1
]}

Wong, K. S. ^{[1
]}

Zhou, Q. F. ^{[2
,3
]}

Zhou, D. ^{[4
]}

Li, Y. C. ^{[4
]}

Luo, H. S. ^{[5
]}

Shung, K. K. ^{[2
,3
]}

Dai, J. Y. ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[2] Univ So Calif, NIH, Ultrason Transducer Resource Ctr, Los Angeles, CA 90089 USA

[3] Univ So Calif, Dept Biomed Engn, Los Angeles, CA 90089 USA

[4] Shenzhen Anker High Tech Co Ltd, Shenzhen 518067, Guangdong, Peoples R China

[5] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 201800, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 09期

关键词：

All Open Access; Green;

D O I：

10.1063/1.3065476

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Lead magnesium niobate-lead titanate single crystal 0.72Pb(Mg1/3Nb2/3)O-3-0.28PbTiO(3) (abbreviated as PMN-PT) was used to fabricate high performance ultrasonic phased-array transducer as it exhibited excellent piezoelectric properties. In this paper, we focus on the design and fabrication of a low-loss and wide-band transducer for medical imaging applications. A KLM model based simulation software PiezoCAD was used for acoustic design of the transducer including the front-face matching and backing. The calculated results show that the -6 dB transducer bandwidth can be improved significantly by using double lambda/8 matching layers and hard backing. A 4.0 MHz PMN-PT transducer array (with 16 elements) was fabricated and tested in a pulse-echo arrangement. A -6 dB bandwidth of 110% and two-way insertion loss of -46.5 dB were achieved. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3065476]

引用

页数：5

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