EP 3785368 A1 20210303 - ELECTROACOUSTIC FILTER, MULTIPLEXER AND METHOD OF MANUFACTURING AN ELECTROACOUSTIC FILTER
Title (en)
ELECTROACOUSTIC FILTER, MULTIPLEXER AND METHOD OF MANUFACTURING AN ELECTROACOUSTIC FILTER
Title (de)
ELEKTROAKUSTISCHER FILTER, MULTIPLEXER UND VERFAHREN ZUR HERSTELLUNG EINES ELEKTROAKUSTISCHEN FILTERS
Title (fr)
FILTRE ÉLECTROACOUSTIQUE, MULTIPLEXEUR ET PROCÉDÉ DE FABRICATION DE FILM ÉLECTROACOUSTIQUE
Publication
Application
Priority
- DE 102018109974 A 20180425
- EP 2019057085 W 20190321
Abstract (en)
[origin: WO2019206533A1] An improved electroacoustic SAW or BAW filter (EAF) with improved electric and/or acoustic properties is provided. The filter has a first resonator (Rl) in a first layer stack (LSI) and a second resonator (R2) in a second layer stack (LS2). The second layer stack is different from the first layer stack in at least one parameter selected from the number of layers, the thickness of a layer and the material of a layer.
IPC 8 full level
H03H 3/04 (2006.01); H03H 3/10 (2006.01); H03H 9/02 (2006.01); H03H 9/17 (2006.01); H03H 9/70 (2006.01); H03H 9/72 (2006.01)
CPC (source: EP)
H03H 3/04 (2013.01); H03H 3/10 (2013.01); H03H 9/02157 (2013.01); H03H 9/02535 (2013.01); H03H 9/171 (2013.01); H03H 9/706 (2013.01); H03H 9/725 (2013.01); H03H 9/02228 (2013.01); H03H 2003/0421 (2013.01); H03H 2003/0471 (2013.01); H03H 2003/0478 (2013.01)
Citation (search report)
See references of WO 2019206533A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102018109974 B3 20190912; CN 112042119 A 20201204; EP 3785368 A1 20210303; WO 2019206533 A1 20191031
DOCDB simple family (application)
DE 102018109974 A 20180425; CN 201980027686 A 20190321; EP 19712759 A 20190321; EP 2019057085 W 20190321