Sound isolation by piezoelectric polymer films connected to negative capacitance circuits

被引：57

作者：

Fukada, E ^{[1
]}

Date, M ^{[1
]}

Kimura, K ^{[1
]}

Okubo, T ^{[1
]}

Kodama, H ^{[1
]}

Mokry, P ^{[1
]}

Yamamoto, K ^{[1
]}

机构：

[1] Kobayasi Inst Phys Res, Kokubunji, Tokyo 1850022, Japan

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2004年 / 11卷 / 02期

关键词：

sound isolation; transmission loss; piezoelectric polymer film; negative capacitance circuit;

D O I：

10.1109/TDEI.2004.1285904

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Sound isolation has been achieved using a piezoelectric polymer film connected to a negative capacitance feedback circuit. A curved PVDF film was located in the middle of an acoustic tube and the transmission loss of sound through the film was determined in the audio frequency range. At any chosen frequency, the complete isolation of sound was achieved by adjusting the feedback, i.e. the complex capacitance of the circuit was matched precisely to that of the film.

引用

页码：328 / 333

页数：6

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