EP 1547245 A2 20050629 - FILTER CIRCUIT
Title (en)
FILTER CIRCUIT
Title (de)
FILTERSCHALTUNG
Title (fr)
MONTAGE FILTRANT
Publication
Application
Priority
- DE 10234685 A 20020730
- EP 0307015 W 20030701
Abstract (en)
[origin: DE10234685A1] The filter circuit has a symmetrical gate (204), an unsymmetrical gate (202), a series circuit filter stage (206) and a symmetry component (208) between the symmetrical gate and the unsymmetrical gate, the symmetry component and the filter stage provided on a common substrate (S). The filter stage can have at least one series bulk acoustic wave resonator and at least one parallel bulk acoustic wave resonator.
IPC 1-7
IPC 8 full level
H03H 7/42 (2006.01); H03H 9/00 (2006.01); H03H 9/58 (2006.01); H03H 9/70 (2006.01); H01F 17/00 (2006.01); H03H 7/38 (2006.01)
CPC (source: EP KR US)
H03H 9/0095 (2013.01 - EP US); H03H 9/58 (2013.01 - KR); H01F 17/0006 (2013.01 - EP US); H01F 2021/125 (2013.01 - EP US); H03H 7/42 (2013.01 - EP US)
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 PT RO SE SI SK TR
DOCDB simple family (publication)
DE 10234685 A1 20040219; AU 2003257428 A1 20040311; AU 2003257428 A8 20040311; CN 100525099 C 20090805; CN 1672326 A 20050921; DE 10392971 B4 20100708; DE 10392971 D2 20050721; EP 1547245 A2 20050629; JP 2005535264 A 20051117; KR 100687076 B1 20070226; KR 20050089957 A 20050909; US 2005212619 A1 20050929; US 7199684 B2 20070403; WO 2004019491 A2 20040304; WO 2004019491 A3 20050506
DOCDB simple family (application)
DE 10234685 A 20020730; AU 2003257428 A 20030701; CN 03817629 A 20030701; DE 10392971 T 20030701; EP 0307015 W 20030701; EP 03792167 A 20030701; JP 2004529988 A 20030701; KR 20057001662 A 20050128; US 4550005 A 20050128