Frequency agile sonic transducer
US5166907A · kind A · utility
13Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Jun 24, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R17/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A solid-state tunable transducer has been developed by incorporating an elastically nonlinear material, silicone rubber, into an electroacoustic transducer made from piezoelectric ceramics. The resonant frequency and mechanical Q of the transducer are tuned mechanically by applying a uniaxial compressive stress to the composite. The resonant frequency is tuned electrically by placing a piezoelectric actuator into the composite and varying the magnitude of the d.c. bias.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.