Broadband electrical impedance matching for piezoelectric ultrasound transducers

Haiying Huang; Daniel Paramo

doi:10.1109/TUFFC.2011.2132

Broadband electrical impedance matching for piezoelectric ultrasound transducers

IEEE Trans Ultrason Ferroelectr Freq Control. 2011 Dec;58(12):2699-707. doi: 10.1109/TUFFC.2011.2132.

Authors

Haiying Huang¹, Daniel Paramo

Affiliation

¹ Mechanical and Aerospace Engineering Department, The University of Texas at Arlington, Arlington, TX, USA. [email protected]

PMID: 23443705
DOI: 10.1109/TUFFC.2011.2132

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Computer Simulation
Computer-Aided Design*
Electric Impedance
Energy Transfer
Equipment Design / methods
Equipment Failure Analysis
Micro-Electrical-Mechanical Systems / instrumentation*
Models, Theoretical*
Transducers*
Ultrasonography / instrumentation*