Two-dimensional piezoelectric transducer assembly
US4864179A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1987 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Nov 27, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0629
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A piezoelectric transducer assembly for producing sonar signals for transmission underwater and for detecting reflected sonar signals. The assembly includes a two-dimensional generally planar array of piezoelectric elements disposed in an elastomer casing. The elements are coupled by way of conductors to electronic circuitry which produces electrical signals for stressing the piezoelectric elements and which processes electrical signals produced by the piezoelectric element in response to reflected sonar signals. The piezoelectric elements are closely packed and are selected to have low cross-coupling characteristics. At least some of the elements are oriented so that their axes of polarization are generally perpendicular to the plane of the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.