Coaxial cables with single-wall carbon nanotube outer conductors exhibiting attenuation/length within specification

In this Letter, high-purity, KAuBr₄-treated single-wall carbon nanotube (SWCNT) materials are utilised as outer conductors in coaxial cables. The attenuation/length is within Mil-C-17 specification and nearly equivalent to traditional copper outer conductors up to 3 GHz. The improved transmission performance is attributed to higher conductivity and density of the SWCNT network which creates enhanced nanoscale coverage to improve screening. The weight/length which can be achieved with SWCNT outer coaxial cables results in greater than 40 savings compared with conventional coaxial cables while maintaining a flexible cable design.