EP 0828307 A3 20000405 - RF-filtering solution for a radio transmitter/receiver
Title (en)
RF-filtering solution for a radio transmitter/receiver
Title (de)
HF-Filteranordnung für Funksender/Empfänger
Title (fr)
Arrangement de filtrage HF pour émetteur/récepteur radio
Publication
Application
Priority
FI 963445 A 19960903
Abstract (en)
[origin: EP0828307A2] In this radio set filtering solution, all passive filtering elements in the transmission and reception branch are combined as an integrated filtering unit (25). The active radiofrequency components (11, 14, 17, 30) are connected to the ports of the filtering unit directly without separate impedance matching networks, since the impedance of the ports is adjusted so that it is correct for the internal connections of the filtering unit. The filtering unit may contain a duplex filter (25a, 25b), in which case it is connected directly to the antenna (21). Also, by adjustment of the antenna port, a separate antenna-impedance matching network inside the filtering unit is avoided. <IMAGE>
IPC 1-7
IPC 8 full level
H01P 1/213 (2006.01)
CPC (source: EP)
H01P 1/2136 (2013.01)
Citation (search report)
- [E] WO 9704534 A1 19970206 - LG PRODUCTS AB [SE], et al
- [XY] US 5389904 A 19950214 - TAO KUANG-CHUNG [TW], et al
- [Y] US 4168479 A 19790918 - RUBIN DAVID
- [Y] US 5239279 A 19930824 - TURUNEN AIMO [FI], et al
- [Y] US 5355524 A 19941011 - HIGGINS JR ROBERT J [US]
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0828307 A2 19980311; EP 0828307 A3 20000405; FI 110968 B 20030430; FI 963445 A0 19960903; FI 963445 A 19980304
DOCDB simple family (application)
EP 97306730 A 19970902; FI 963445 A 19960903