EP 1684917 B1 20170503 - 1-3 COMPOSITE STRUCTURE HIGH FREQUENCY SONAR ANTENNA
Title (en)
1-3 COMPOSITE STRUCTURE HIGH FREQUENCY SONAR ANTENNA
Title (de)
1-3-VERBUNDSTRUKTUR MIT HOCHFREQUENZ-SONARANTENNE
Title (fr)
ANTENNE SONAR HF A STRUCTURE COMPOSITE 1-3
Publication
Application
Priority
- EP 2004051497 W 20040715
- FR 0309332 A 20030729
Abstract (en)
[origin: WO2005014185A1] The invention relates to an antenna structure which can operate at a high frequency and which is made of ceramic piezoelectric contacts grouped together forming independent sensors. According to the invention, the structure of the antenna consists of a set of contacts disposed on a rear plate. The contacts belonging to one sensor are isolated from the contacts belonging to other sensors by means of interposed sheets which are made of a high acoustic decoupling material such as polyurethane. The entirety thereof is immersed in a dielectric filling matrix made of a dielectric material having good piezoelectric and mechanical properties such as an epoxide resin, for example. Integration of interposed sheets between various sensors makes it possible to significantly improve the acoustic decoupling of the inventive antenna in comparison with currently existing antennae of the same type. The antenna can be used in high frequency sonars.
IPC 8 full level
B06B 1/06 (2006.01)
CPC (source: EP NO)
B06B 1/0629 (2013.01 - EP NO)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2858467 A1 20050204; FR 2858467 B1 20080801; AU 2004262588 A1 20050217; EP 1684917 A1 20060802; EP 1684917 B1 20170503; NO 20060952 L 20060227; NO 337904 B1 20160704; WO 2005014185 A1 20050217
DOCDB simple family (application)
FR 0309332 A 20030729; AU 2004262588 A 20040715; EP 04766227 A 20040715; EP 2004051497 W 20040715; NO 20060952 A 20060227