Results 11 to 20 of about 439 (222)
Resonance Spectrum Characteristics of Effective Electromechanical Coupling Coefficient of High-Overtone Bulk Acoustic Resonator [PDF]
Micromachines, 2016 A high-overtone bulk acoustic resonator (HBAR) consisting of a piezoelectric film with two electrodes on a substrate exhibits a high quality factor (Q) and multi-mode resonance spectrum. By analyzing the influences of each layer’s material and structure (
Jian Li, Mengwei Liu, Chenghao Wang
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Micromachines, 2023 The arrival of the 5G era has promoted the need for filters of different bandwidths. Thin-film bulk acoustic resonators have become the mainstream product for applications due to their excellent performance.
Yuanhang Qu +9 more
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Applied Sciences, 2023 In this study, we propose a fast calculation method that utilizes Kirchhoff’s hypotheses and electroelasticity theory to derive the resonant frequency, antiresonant frequency, and effective electromechanical coupling coefficient of a trilaminar bending ...
Chenhui Zhu +4 more
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Advances in Mechanical Engineering, 2015 An analytical model on electromechanical coupling coefficient and the length optimization of a bending piezoelectric ultrasonic transducer are proposed. The piezoelectric transducer consists of 8 PZT elements sandwiched between four thin electrodes, and ...
Qiang Zhang, Shengjun Shi, Weishan Chen
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Sensors, 2017 The input electrical impedance behaves as a capacitive when a piezoelectric transducer is excited near its resonance frequency. In order to increase the energy transmission efficiency, a series or parallel inductor should be used to compensate the ...
Shuyu Lin, Jie Xu
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Analysis on the Radial Vibration of Longitudinally Polarized Radial Composite Tubular Transducer
Sensors, 2020 The radial vibration of a radial composite tubular transducer with a large radiation range and power capacity is studied. The transducer is composed of a longitudinally polarized piezoelectric ceramic tube and a coaxial outer metal tube.
Xiaoyu Wang, Shuyu Lin
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Journal of Vibration and Control, 2022 International audienceSmart sandwich cantilevers with aluminum faces and single and double cores, formed by assembled shear-mode piezoceramic patches with same poling, are experimentally and numerically assessed for the first time.
Benjeddou, Ayech, Berik, Pelin
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Mechanics of Advanced Materials and Structures, 2009 This work presents a critical analysis of methodologies to evaluate the effective (or generalized) electromechanical coupling coefficient (EMCC) for structures with piezoelectric elements.
BENJEDDOU, Ayech, TRINDADE, Marcelo A.
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The effective electromechanical coupling coefficient of piezoelectric thin-film resonators
Applied Physics Letters, 2005 The input electric impedance Zin for a three-layer thin-film bulk acoustic wave resonator is derived by transfer matrix method to describe the resonator behavior. Based on the impedance spectra, the effective coupling coefficient keff2 of a thin-film resonator can be evaluated with respect to the resonator structure and thin-film properties.
Qing-Ming Wang, Qingming Chen
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An equivalent dipole analysis of PZT ceramics and lead-free piezoelectric single crystals [PDF]
Journal of Advanced Dielectrics, 2016 The recently proposed Equivalent Dipole Model for describing the electromechanical properties of ionic solids in terms of 3 ions and 2 bonds has been applied to PZT ceramics and lead-free single crystal piezoelectric materials, providing analysis in ...
Andrew J. Bell
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