Parallel foamed coaxial cable

Abstract

A parallel foamed coaxial cable includes one or more pairs of inner conductors aligned in parallel, a foamed insulation covering together the inner conductors and having a cross sectional shape including an elliptical shape, a rounded-rectangular shape or a quasi-elliptical shape formed by combining a plurality of curved lines, a non-foamed skin layer covering the foamed insulation and having a maximum thickness in a major axis direction of the cross sectional shape of the foamed insulation and a minimum thickness in a minor axis direction of the cross sectional shape of the foamed insulation, an outer conductor covering the non-foamed skin layer, and an insulation jacket covering the outer conductor. The maximum thickness of the non-foamed skin layer is not less than 1% of a major axis of the cross sectional shape of the foamed insulation.

Dependencies are inferred from the claim text.