Global Patent Index - EP 1238464 A2

EP 1238464 A2 2002-09-11 - 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

EP 1238464 A2 (DE)

Application

EP 00993470 A

Priority

  • DE 0004344 W
  • DE 19960299 A

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 (main, further and additional classification)

H04B 1/00

IPC 8 full level (invention and additional information)

H03H 9/72 (2006.01); H01P 1/213 (2006.01); H03H 9/64 (2006.01); H03H 11/34 (2006.01); H04B 1/00 (2006.01); H04B 1/50 (2006.01); H04B 1/52 (2015.01)

IPC 8 main group level (invention and additional information)

H04B (2006.01)

CPC (invention and additional information)

H04B 1/52 (2013.01)

Citation (search report)

See references of WO 0145273A3

Designated contracting state (EPC)

AT BE CH CY DE FR GB LI

EPO simple patent family

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; US 2003076194 A1 20030424; US 6861924 B2 20050301

INPADOC legal status


2005-01-05 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040701

2004-05-26 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): AT BE CH CY DE FR GB LI

2002-10-23 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: MACHUI, JUERGEN

2002-09-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020423

2002-09-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR