Broadband Electrical Impedance Matching for Piezoelectric Ultrasound Transducers

被引：96

作者：

Huang, Haiying ^{[1
]}

Paramo, Daniel ^{[1
,2
]}

机构：

[1] Univ Texas Arlington, Dept Mech & Aerosp Engn, Arlington, TX 76019 USA

[2] Univ Texas Arlington, Adv Sensor Technol Lab, Arlington, TX 76019 USA

来源：

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 2011年 / 58卷 / 12期

关键词：

DESIGN; OPTIMIZATION; LAYERS;

D O I：

10.1109/TUFFC.2011.2132

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This paper presents a systematic method for designing broadband electrical impedance matching networks for piezoelectric ultrasound transducers. The design process involves three steps: 1) determine the equivalent circuit of the unmatched piezoelectric transducer based on its measured admittance; 2) design a set of impedance matching networks using a computerized Smith chart; and 3) establish the simulation model of the matched transducer to evaluate the gain and bandwidth of the impedance matching networks. The effectiveness of the presented approach is demonstrated through the design, implementation, and characterization of impedance matching networks for a broadband acoustic emission sensor. The impedance matching network improved the power of the acquired signal by 9 times.

引用

页码：2699 / 2707

页数：9

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