EP 0980109 A2 20000216 - Duplexer and communication apparatus
Title (en)
Duplexer and communication apparatus
Title (de)
Duplexer und Kommunikationsgerät
Title (fr)
Duplexeur et dispositif de communication
Publication
Application
Priority
JP 22704698 A 19980811
Abstract (en)
The invention provides a duplexer (31), comprising: a first frequency variable type filter (45) including a voltage-controllable reactance element (D1, D2, D3 D4) and operative to switch transmitting - receiving frequencies corresponding to a first communication system (GSM); a second frequency variable type filter (46) including a voltage-controllable reactance element (D5, D6, D7, D8) and operative to switch transmitting - receiving frequencies corresponding to a second communication system (DCS); a synthetic circuit (47) electrically connected between one end of said first frequency variable type filter (45) and one end of said second frequency variable type filter (46); an antenna terminal (ANT) electrically connected to said synthetic circuit (47); a first external terminal (P1) electrically connected to the other end of said first frequency variable type filter (45); and a second external terminal (P2) electrically connected to the other end of said second frequency variable type filter (46). <IMAGE>
IPC 1-7
IPC 8 full level
H01P 1/205 (2006.01); H01P 1/15 (2006.01); H01P 1/202 (2006.01); H01P 1/213 (2006.01); H01P 11/00 (2006.01); H03H 7/46 (2006.01)
CPC (source: EP KR)
H01P 1/15 (2013.01 - EP); H01P 1/202 (2013.01 - EP); H01P 1/2133 (2013.01 - EP); H01P 11/00 (2013.01 - KR)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0980109 A2 20000216; EP 0980109 A3 20010808; JP 2000059106 A 20000225; KR 100327534 B1 20020314; KR 20000017227 A 20000325
DOCDB simple family (application)
EP 99115533 A 19990805; JP 22704698 A 19980811; KR 19990032778 A 19990810