矩形CMUT的辐射阻抗
Shayan Khorassany1, Eric B Dew1, Mohammad Rahim Sobhani1
1Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
Sensors (Basel, Switzerland)
|September 14, 2024
概括
本研究引入了一种快速方法,用于计算矩形电容微机超声传感器 (CMUT) 中的辐射阻抗. 这种新方法提高了建模准确度,以更好地设计CMUT.
科学领域:
- * 声学 声学 声学 声学
- * MEMS (微电机系统) 是指微电机系统.
- * 转换器技术 转换器技术
背景情况:
- *具有矩形膜的电容微加工超声传感器 (CMUT) 与传统压电传感器相比,提供了性能优势.
- *目前这些CMUT的建模依赖于计算密集的数值方法.
- *开发更快的建模技术,如同等电路模型,对于优化CMUT设计至关重要.
研究的目的:
- * 介绍一种新的,快速的方法来估计紧的矩形散热器的辐射阻抗.
- * 克服CMUT建模现有的计算繁重的数值方法的局限性.
- * 促进先进的矩形CMUT的设计和开发.
主要方法:
- * 运用多项式形状模型对速度概率的近似计算.
- * 基于近似速度配置文件,快速准确地估计辐射阻抗.
- *使用各种膜面积比和偏差电压的有限元模拟进行验证.
主要成果:
- * 拟议的方法准确地模拟了面积比为1:1至1:25的矩形散热器的辐射电阻.
- * 开发并验证了一种替代形状模型,以提高在高面比下计算辐射反应率的准确性.
- *有限元模拟证实了与现有方法相比,开发的方法的准确性.
结论:
- * 本方法提供了一个计算效率高,准确的方法,用于计算矩形CMUT中的辐射阻抗.
- *开发的模型增强了设计和优化CMUT的能力,具有更好的性能特征.
- * 附带的 MATLAB 脚本可以快速计算辐射阻抗,支持未来对矩形 CMUT 的研究和开发.
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