WANG Ren-xin, LIU Yuan, ZHANG Guo-jun, et al. Broadband MEMS vector hydrophone based on Parylene encapsulation[J]. 2015, 34(8): 16-18. DOI: 10.13873/J.1000-9787(2015)08-0016-03.
基于Parylene封装的宽频带MEMS矢量水听器
摘要
针对目前水听器的聚氨酯封装所导致的窄频带问题
提出一种新的高疏水Parylene薄膜无透声帽封装矢量水听器
即利用Parylene薄膜的淀积高保形性、低渗透性和高绝缘性实现无透声帽封装
解决透声帽带来共振峰引入问题
拓宽水听器的频带。实验结果表明:水听器的共振峰由450 Hz提高到了1 400 Hz。
Abstract
Aiming at problem of narrow bandwidth caused by Polyurethane encapsulation of vector hydrophone
propose a kind of Parylene encapsulation
using properties of high shape preserving
low permeability and high insulation that Parylene membrane has
to realize sound transparent capless encapsulation and solve the problem of resonant peak introducing caused by sound transparent
broaden frequency band. Tests show that resonance frequency is increased from 450 Hz to 1 400 Hz.
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references
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