| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly foamed plastic insulation coaxial cable enabled to equivalently make an extent of foaming 90%, in order to further reduce the degree of attenuation. SOLUTION: For the highly foamed plastic insulation coaxial cable comprising an inside conductor, a foamed plastic insulation body, and an outside conductor, the foamed plastic insulation body is divided into plurality in the direction of cross section to form resin parts and vacant spaces standing one after the other, and also the resin parts and the vacant spaces standing one after the other are formed in the longitudinal direction of the cable, and the vacant spaces in the longitudinal direction become discontinuous.
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