EP 1250759 A4 20041215 - BAND PASS FILTER FROM TWO FILTERS
Title (en)
BAND PASS FILTER FROM TWO FILTERS
Title (de)
AUS ZWEI FILTERN HERGESTELLTER BANDPASSFILTER
Title (fr)
FILTRE PASSE-BANDE A PARTIR DE DEUX FILTRES
Publication
Application
Priority
- US 0034077 W 20001215
- US 49199800 A 20000126
Abstract (en)
[origin: WO0156157A1] A band pass filter (80) includes a pair of filters (82, 83) having different center frequencies and a difference amplifier (84) coupled to the outputs of the filters. The filters preferably have response curves that intersect at -3 dB. The separation of the center frequencies determines, in part, the ripple in the response curve of the band pass filter.
IPC 1-7
IPC 8 full level
H03H 11/12 (2006.01); H03H 17/04 (2006.01); H03H 19/00 (2006.01)
CPC (source: EP)
H03H 11/1217 (2013.01); H03H 11/1295 (2013.01); H03H 17/04 (2013.01); H03H 19/004 (2013.01)
Citation (search report)
- [A] WO 9956339 A1 19991104 - US NAVY [US], et al
- [X] M. GILISSEN: "Filtre passe-bande à haute séliectivité avec réjection de bruit.", ELECTRONIQUE ET APPLICATIONS INDUSTRIELLES., no. 262s, January 1979 (1979-01-01), FRSOCIETE DES EDITIONS RADIO. PARIS., pages 41 - 43, XP002301087
- See references of WO 0156157A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0156157 A1 20010802; EP 1250759 A1 20021023; EP 1250759 A4 20041215
DOCDB simple family (application)
US 0034077 W 20001215; EP 00986432 A 20001215