Electroacoustic transducer of the piezoelectric polymer type
US4535205A · kind A · utility
31Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1982 |
| Grant date | Aug 13, 1985 |
| Priority date | — |
| Expiry date | Aug 9, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R17/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a piezoelectric microphone or hydrophone, the elastic structure which reacts directly to the acoustic pressure is formed of piezoelectric polymer. The electroacoustic transducer according to the invention makes use of an elastic structure in the form of a rim clamped plate having at least one incurvation and covered on at least one of its two faces with electrodes connected to an impedance-matching circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.