EP 1000465 A1 20000517 - UNIDIRECTIONAL TRANSDUCER ETCHED WITH SURFACE ACOUSTIC WAVES
Title (en)
UNIDIRECTIONAL TRANSDUCER ETCHED WITH SURFACE ACOUSTIC WAVES
Title (de)
GRAVIERTER UNIDIREKTIONALER AKUSTISCHER OBERFLÄCHENWELLENWANDLER
Title (fr)
TRANSDUCTEUR UNIDIRECTIONNEL GRAVE A ONDES ACOUSTIQUES DE SURFACE
Publication
Application
Priority
- FR 9901265 W 19990528
- FR 9806834 A 19980529
Abstract (en)
[origin: FR2779289A1] The invention concerns a transducer with surface acoustic waves wherein an etched grid is overlaid on the standard electrode arrays of acoustic transducers. The overlay of said arrays enables to obtain a preferential direction for the propagation of the acoustic waves while maintaining a high quality factor Q comparable to that of standard birectional transducers. The invention is applicable to mobile radio communication.
IPC 1-7
IPC 8 full level
H03H 9/145 (2006.01)
CPC (source: EP KR US)
H03H 9/145 (2013.01 - KR); H03H 9/14505 (2013.01 - EP KR US); H03H 9/14517 (2013.01 - KR)
Citation (search report)
See references of WO 9963662A1
Designated contracting state (EPC)
DE FI FR GB IT SE
DOCDB simple family (publication)
FR 2779289 A1 19991203; FR 2779289 B1 20000901; CA 2297799 A1 19991209; CN 1155153 C 20040623; CN 1272248 A 20001101; EP 1000465 A1 20000517; JP 2002517933 A 20020618; KR 20010022225 A 20010315; US 6414414 B1 20020702; WO 9963662 A1 19991209
DOCDB simple family (application)
FR 9806834 A 19980529; CA 2297799 A 19990528; CN 99800758 A 19990528; EP 99920942 A 19990528; FR 9901265 W 19990528; JP 2000552770 A 19990528; KR 20007000798 A 20000124; US 46357800 A 20000128