Design of a Wideband Tonpilz Transducer Comprising Non-Uniform Piezoceramic Stacks with Equivalent Circuits
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ID: 273606
2021
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Abstract
Tonpilz transducers are desirable for their superior performance in underwater target detection and communication applications. Several design schemes to widen their bandwidth have been reported, but these schemes often involve a complex structure or arrangement of additional components. In this study, a simple design is proposed to improve the bandwidth of a multimode Tonpilz transducer by using a non-uniform drive section that consists of piezoelectric stacks of various thicknesses. The efficacy of the design is illustrated with a multimode Tonpilz transducer having three lead zirconate titanate (PZT) stacks of different thicknesses. A new equivalent circuit was developed to analyze the frequency response of the transducer incorporating the non-uniform drive section and was used for rigorous analysis of the effects of varying the position and thickness of the non-uniform stacks on the transmitting characteristics of the transducer. The validity of the design was verified through the fabrication and characterization of a prototype multimode Tonpilz transducer. The developed structure can be readily extended to an arbitrary number of stacks in the Tonpilz transducer with any number of PZT disks in each stack.
| Reference Key |
pyo2021sensorsdesign
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| Authors | Seonghun Pyo;Muhammad Shakeel Afzal;Youngsub Lim;Seungjin Lee;Yongrae Roh;Pyo, Seonghun;Afzal, Muhammad Shakeel;Lim, Youngsub;Lee, Seungjin;Roh, Yongrae; |
| Journal | sensors |
| Year | 2021 |
| DOI |
10.3390/s21082680
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