EP 3638429 B1 20210804 - HIGH FREQUENCY WIDEBAND WIDE BEAM ULTRASOUND EMITTER TRANSDUCER FOR UNDERWATER COMMUNICATIONS
Title (en)
HIGH FREQUENCY WIDEBAND WIDE BEAM ULTRASOUND EMITTER TRANSDUCER FOR UNDERWATER COMMUNICATIONS
Title (de)
HOCHFREQUENZ-BREITBAND-BREITSTRAHL-ULTRASCHALLSENDER FÜR UNTERWASSERKOMMUNIKATION
Title (fr)
TRANSDUCTEUR D'ÉMETTEUR ULTRASONORE À FAISCEAU ÉTENDU ET LARGE BANDE HAUTE FRÉQUENCE POUR COMMUNICATIONS SOUS-MARINES
Publication
Application
Priority
- PT 11015217 A 20170616
- IB 2018054471 W 20180618
Abstract (en)
[origin: WO2018229735A1] Underwater ultrasound transducer for underwater communications comprising an assembly of a backing structure and a multi-layer piezoelectric polymer film attached to a surface of said backing structure, wherein said surface has a shape of a torus or of part of a torus and said film has a shape of part of a cylindrical segment, wherein said film is arranged in the outer half-surface of the torus shape. It may comprise a plurality of cylindrical segment multi-layer piezoelectric polymer films arranged around the outer half-surface of the torus shape. The surface may have a shape of a torus cut along its equator plane. The film may be Polyviylidenefluoride (PVDF) or P(VDF-TrFE) polymer thin film.
IPC 8 full level
B06B 1/06 (2006.01); G10K 11/00 (2006.01); H04R 1/44 (2006.01)
CPC (source: EP)
B06B 1/0622 (2013.01); B06B 1/0688 (2013.01); G10K 11/006 (2013.01); G10K 2200/11 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2018229735 A1 20181220; EP 3638429 A1 20200422; EP 3638429 B1 20210804; PT 3638429 T 20211109
DOCDB simple family (application)
IB 2018054471 W 20180618; EP 18746282 A 20180618; PT 18746282 T 20180618