通过匹配层设计扩大复合传感器的带宽

IF 1.3 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER

Ferroelectrics Letters Section Pub Date : 2017-05-04 DOI:10.1080/07315171.2017.1320502

Chao Zhong, Likun Wang, L. Qin, B. Yu

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引用次数: 7

摘要

通过匹配层设计，成功地扩展了复合传感器的带宽。首先，将1-3压电复合材料等效模型与压电晶体厚度振动的机电等效电路相结合，推导出换能器的导纳方程;然后通过电导曲线总结了带宽与匹配层参数之间的关系。最后，设计并制作了带匹配层的复合换能器。实验结果表明，带宽达到56 kHz，机械品质因子Q降至1.8。计算结果与理论计算相吻合。

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Expand bandwidth of composite transducer via matching layer design

ABSTRACT The bandwidth of composite transducer was successfully expanded via matching layer design. Firstly, the admittance equation of transducer was deduced through combining the equivalent model of 1–3 piezoelectric composite with the electromechanical equivalent circuit of piezoelectric crystal thickness vibration. Then, the relations between bandwidth and the parameters of matching layer were summarized by the conductance curves. Finally, a composite transducer with matching layer was designed and fabricated. Experimental results show that the bandwidth reaches to 56 kHz and the mechanical quality factor Q drops to 1.8. The results are in agreement with the theoretical calculation.

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来源期刊

Ferroelectrics Letters Section 物理-物理：凝聚态物理

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

4.8 months

期刊介绍： Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.