压电膜叠层对微型压电传声器性能的影响  

Influence of Stacked Piezoelectret Films on Piezoelectric Microphone′s Performance

作　　者：郑洁 刘涛 梁海 陈雄 朱彪 

机构地区：[1]深圳市豪恩声学股份有限公司,广东深圳518118

出　　处：《压电与声光》2015年第2期245-247,共3页Piezoelectrics & Acoustooptics

基　　金：深圳市战略新兴产业发展专项资金科学基金资助项目(CXZZ20120611094042983)

摘　　要：对比分析了在微型传声器中采用4种不同的叠层方法来提高压电传声器灵敏度的效果。证实了在微型传声器中,采用直接压合或用导电胶粘接多张压电膜串联的叠层方式无效果。采用导电环连接的方式进行微型压电传声器中的叠层,叠层后压电传声器的灵敏度提高约6dB。实验表明,采用薄导电环连接的叠层压电传声器性能比采用厚导电环连接的叠层压电传声器性能更稳定,频响曲线更平整。We analyzed the effect of 4different methods in stacking films to improve the miniature piezoelectric microphone′s sensitivity.There is no effect to stack piezoelectric film by direct laminated or conductive adhesive bonded in miniature microphones.However,using the conductive ring to connect films can increase the microphone＇s sensitivity of 6dB.The experiment results show that the microphones use the thin conductive ring to connect films have more stable performance than the microphones use thick conductive ring to connect the films,and the frequency response curve become smoother.

关 键 词：压电驻极体 压电传声器 叠层 灵敏度 

分 类 号：TN641[电子电信—电路与系统]