INSULATED WIRE, COAXIAL CABLE, AND MULTICORE CABLE

摘要

Provided are an insulated wire, a coaxial cable, and a multicore cable that are insulated with insulators having a low dielectric constant, are small in diameter and can obtain good electrical characteristics with no decrease in withstand voltage or strength. Core conductors (12) of a coaxial cable (11) are enclosed by an insulator (13) having longitudinally continuous apertures (14). Outer conductors (15) are disposed along the outer circumference of the insulator (13). The apertures (14) have a cross-sectional circular shape or elliptical sectional shape. There are 6 to 8 apertures (14) which are evenly arranged in the insulator (13). In a cross section perpendicular to the length direction of the coaxial cable (11), when the aperture ratio is defined as the ratio of the area of the apertures (14) to the sum of the total area of the apertures (14) and the area of the insulator (13), the aperture ratio for all apertures (14) combined is 18% to 35%.