The radio frequency coaxial cable is that have two united at heart conductor, but conductor with shield a layer again total use same electric cable of axis.The radio frequency coaxial cable insulate a material adoption physics hair cannon to gather ethylene insulation copper line the conductor constitute, at inside layer the exterior which insulate material be namely another wreath form conductor outside conductor, outside conductor adoption the copper take to model, weld, firm line;Or adoption aluminum tube structure;Or the adoption weave structure, then the whole electric cable be wrap up by the protect of PVC material set.
Currently, the in common use radio frequency coaxial cable have 2 types:50 Ω with the radio frequency coaxial cable of 75 Ωs.
Characteristic resistance 75 Ω radio frequency the coaxial cable be in common use at the CATV net, so be called CATV electric cable, deliver the bandwidth can reach to a 1 GHz, currently deliver of in common use CATV electric cable bandwidth:750 MHz.
Characteristic resistance 50 Ω radio frequency the coaxial cable be main to used for Ji to take a letter number to deliver, deliver a bandwidth to 1~2 OMHz,
General characteristic resistance 50 Ω thin coaxial cables of biggest deliver the distance as 180 meters, the thick coaxial cable can reach to 1000 meters.