Patent ID: 7541542

Claim:
A micro coaxial cable, comprising: an inner conductor; an insulation layer having foaming cells and formed to surround the inner conductor; an over-foaming preventing layer formed to surround the insulation layer for the purpose of uniform forming of the foaming cells; a metal shield layer formed to surround the over-foaming preventing layer; and a protective coating layer formed to surround the metal shield layer, wherein the over-foaming preventing layer has a lower melt temperature than the insulation layer, wherein the over-foaming preventing layer is made of one or more polymer resins selected from the group consisting of polyethylene, polypropylene and polyethylene terephthalate, wherein the insulation layer and the over-foaming preventing layer are formed using co-extrusion or tandem extrusion, and wherein the micro coaxial cable has a diameter of 1 mm or less.