EP 1020875 A3 20010418 - Emi filtering of multi-wire cables
Title (en)
Emi filtering of multi-wire cables
Title (de)
EMI - Filtrieren bei Mehrdrahtkabeln
Title (fr)
Filtration EMI de câbles multiconducteurs
Publication
Application
Priority
AU PP814899 A 19990114
Abstract (en)
[origin: EP1020875A2] A multiple-wire cable such as a cable connecting a PABX which generates unwanted EMI signals to other equipment acts to radiate EMI and to conduct EMI signals to other equipment. It is known to apply individual line filters to each line to prevent the EMI signals from being distributed over the cable. According to the invention EMI signals, both radiated and conducted are attenuated by a distributed filter in the form of a screen applied to the cable. To effectively attenuate the conducted signals, the length of the screened cable must be greater than a minimum length determined for the frequency of the EMI and the dimensions of the cable. <IMAGE>
IPC 1-7
IPC 8 full level
H01B 11/06 (2006.01); H04B 3/02 (2006.01)
CPC (source: EP)
H01B 11/06 (2013.01)
Citation (search report)
- [X] US 5209964 A 19930511 - NAKAGAWA ASAHARU [JP]
- [A] EP 0584658 A2 19940302 - SEL ALCATEL AG [DE]
- [A] EP 0597324 A1 19940518 - SUMITOMO WIRING SYSTEMS [JP]
- [PX] DE 19909569 A1 19990916 - MURATA MANUFACTURING CO [JP]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1020875 A2 20000719; EP 1020875 A3 20010418; AU PP814899 A0 19990204; JP 2000232396 A 20000822
DOCDB simple family (application)
EP 99123557 A 19991126; AU PP814899 A 19990114; JP 2000000836 A 20000106