EP 1238464 A2 20020911 - DUPLEXER WITH IMPROVED TRANSMISSION/RECEIVING BAND SEPARATION
Title (en)
DUPLEXER WITH IMPROVED TRANSMISSION/RECEIVING BAND SEPARATION
Title (de)
DUPLEXER MIT VERBESSERTER SENDE-/EMPFANGSBANDTRENNUNG
Title (fr)
COMMUTATEUR EMISSION/RECEPTION AYANT UNE SEPARATION EMISSION/RECEPTION AMELIOREE
Publication
Application
Priority
- DE 0004344 W 20001206
- DE 19960299 A 19991214
Abstract (en)
[origin: WO0145273A2] The invention relates to a duplexer for a wireless communication system with a transmission band and a receiving band. According to the invention, a split surface wave filter consisting of at least two partial filters which cover adjacent partial frequency ranges of the corresponding band and which together form an entire band, is provided as an input and/or output filter. At least two pairs of partial filters are provided, each pair comprising a filter in the input and output filter respectively. A switch is used to switch between the at least two pairs. If the duplexer interval remains the same, a greater band interval is created between the transmission and receiving bands or between the corresponding partial frequency ranges, said band interval being produced with surface wave filters.
IPC 1-7
IPC 8 full level
H01P 1/213 (2006.01); H03H 9/64 (2006.01); H03H 9/72 (2006.01); H03H 11/34 (2006.01); H04B 1/00 (2006.01); H04B 1/40 (2006.01); H04B 1/50 (2006.01); H04B 1/52 (2006.01)
IPC 8 main group level
H04B (2006.01)
CPC (source: EP KR US)
H04B 1/52 (2013.01 - EP KR US)
Citation (search report)
See references of WO 0145273A2
Designated contracting state (EPC)
AT BE CH CY DE FR GB LI
DOCDB simple family (publication)
WO 0145273 A2 20010621; WO 0145273 A3 20011227; CA 2392833 A1 20010621; CN 1411632 A 20030416; DE 19960299 A1 20010621; EP 1238464 A2 20020911; JP 2003517239 A 20030520; KR 20020059762 A 20020713; US 2003076194 A1 20030424; US 6861924 B2 20050301
DOCDB simple family (application)
DE 0004344 W 20001206; CA 2392833 A 20001206; CN 00817227 A 20001206; DE 19960299 A 19991214; EP 00993470 A 20001206; JP 2001545444 A 20001206; KR 20027007609 A 20020614; US 14982802 A 20020916