注:国家自然科学基金资助项目(69974001);国家科技部攀登计划资助项目(国科基字[1999]045);安徽省自然科学基金资助项目(99043522)
作者:操文祥 葛立峰
单位:安徽大学电子科学与技术学院 (230039)
中图分类号 TP212.1
文献标识码:A
文章编号:1006-883X(2006)03-0006-04
摘要:分析V形槽静电超声传感器微气隙结构研究静电场不均匀性,用解拉普拉斯方程的方法解的单个V形槽面电荷密度。通过建立π/4角两平板电容器模型,提出V形槽静电传感器电容值的定量计算方法,得到与试验相接近的结果。
关键词:静电超声传感器;V形槽面电荷密度;静电容
Research On Electrostatic Field Asymmetry Of Ultrasonic Transducers With V-Grooved Backplates
Abstract: In this paper,by analyzing micro air-gap structure for electrostatic ultrasonic transducers with V-grooved backplates, a research on electrostatic field asymmetry of ultrasonic transducers is indicated. A single V-grooved surface charge density is solved by solving Laplaces equation. By modelling a π/4 angle for an electrostatic ultrasonic transducer with a grooved backplate, a method is proposed. And calculating its capacitance, the outcome is very close to the experimentation result.
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备注:2006年 第12卷 第3期