title: Broadband electrical impedance matching for piezoelectric ultrasound transducers.
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.
authors: Mechanical and Aerospace Engineering Department, The University of Texas at Arlington, Arlington, TX, USA. huang@uta.edu
authors: Haiying
authors: H
authors: Huang
authors: Daniel
authors: D
authors: Paramo
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D017097:Electric Impedance; D004735:Energy Transfer; D004867:Equipment Design / Q000379:methods; D019544:Equipment Failure Analysis; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation*; D008962:Models, Theoretical; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation*