EP 1419577 A1 20040519 - FILTER SYSTEM WITH BULK WAVE RESONATOR
Title (en)
FILTER SYSTEM WITH BULK WAVE RESONATOR
Title (de)
FILTERANORDNUNG MIT VOLUMENWELLEN-RESONATOR
Title (fr)
ENSEMBLE FILTRE COMPORTANT UN RESONATEUR A ONDES DE VOLUME
Publication
Application
Priority
- EP 02755508 A 20020805
- EP 01306933 A 20010814
- IB 0203291 W 20020805
Abstract (en)
[origin: WO03017481A1] The invention relates to a filter system that is provided with at least one bulk wave resonator that contains a resonator unit and a reflection element. The resonator unit comprises a first (3) and a second electrode (5), in addition to a textured piezoelectric layer (4) interposed between the first (3) and the second (5) electrode.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H03H 9/581 (2013.01 - EP US); H03H 9/589 (2013.01 - EP US)
Citation (search report)
See references of WO 03017481A1
Citation (examination)
- EP 0609555 A2 19940810 - MOTOROLA INC [US]
- IIJIMA T. ET AL: "Displacement Property of PZT Films Prepared by CSD Method", PROC. OF THE 2000 12TH IEEE INT. SYMPOSIUM ON APPLICATIONS ON FERROELECTRICS, ISAF 2000, 21 July 2000 (2000-07-21) - 2 August 2000 (2000-08-02), pages 945 - 948
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03017481 A1 20030227; CN 1541447 A 20041027; CN 1541447 B 20100421; EP 1419577 A1 20040519; JP 2005500778 A 20050106; US 2004189423 A1 20040930; US 6975182 B2 20051213
DOCDB simple family (application)
IB 0203291 W 20020805; CN 02815866 A 20020805; EP 02755508 A 20020805; JP 2003522268 A 20020805; US 48645204 A 20040210