LI Fen, SHI Shuzheng, YANG Xiangyu, et al. Design of silicon-based piezoelectric MEMS spherical vector hydrophone[J]. 2020, (3): 84-86. DOI: 10.13873/J.1000-9787(2020)03-0084-03.
硅基压电MEMS球形矢量水听器设计
摘要
为实现水听器体积微型化
提高其固有频率并保证灵敏度
提出了一种新型无源器件
即基于压电效应的微机电系统(MEMS)一维球形矢量水听器。使用COMSOL软件进行仿真设计
确定器件关键尺寸。采用MEMS工艺加工制得器件并进行测试
结果表明:该水听器灵敏度达到-205 dB(0 dB=1 V/μPa)
固有频率可达到1. 6 kHz
具有良好的一维指向性。
Abstract
Hydrophones are widely used in underwater acoustic signal detection and underwater target tracking. To realize miniaturization of volume of hydrophone
improve its natural frequency and ensure sensitivity
a new type of passive components
a MEMS spherical vector hydrophone based on piezoelectric effect is proposed. The COMSOL software is used for simulation design to determine the key size of the device. MEMS process is used for fabrication and the device is tested. Test result shows that the sensitivity of the hydrophone can reach-205 db( 0 dB = 1 V/μPa)