Patent ID: 6150612
Filing Date: 2000-11-21
Classification: H01B

Abstract:
A communication cable comprising:a plurality of twisted pair conductors, each of said twisted pair conductors including a pair of individually insulated metal conductors that are twisted together to form one of said plurality of twisted pair conductors;a separator having a plurality of outwardly protruding projections angularly spaced about a core, said plurality of outwardly protruding projections having substantially parallel sides and protruding radially from said core and defining regions between adjacent ones of said outwardly protruding projections within each of which one of said plurality of twisted pair conductors is contained, said regions and said projections sized to maximize air about each one of said twisted pair conductors; anda communication cable jacket enclosing said plurality of twisted pair conductors separated by said plurality of outwardly protruding projections of said separator; wherein:said communication cable has a high test frequency of 400 MHz and for lengths of 90 meters is characterized by an ACR (attenuation to crosstalk ratio) of at least 10 dB at a frequency of 200 MHz and an ACR of at least 0 dB at a frequency of 300 MHz measured using worst-pair NEXT testing, and said communication cable for lengths of 100 meters is characterized by an ACR of at least 10 dB at a frequency of 160 MHz and an ACR of at least 0 dB at a frequency of 250 MHz measured using powersum NEXT testing.