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The role of coax cable in signal transmission

Coaxial cable is an electrical cable composed of a conductive core wrapped with a non-conductive dielectric layer, around the cable core with a metal layer, the outermost has an insulating sheath. British mathematician and engineer Oliver Heaviside invented this coaxial cable, patented in 1880. Since then, coax cable has been popularized in the fields of security, television and the Internet.