A coaxial cable (10) includes at least one conducting wire (110), at least
one insulating layer (120) coating a respective conducting wire (110), at
least one shielding layer (130) surrounding the at least one insulating
layer (120), and a single sheath (140) wrapping the at least one
shielding layer (130). The shielding layer (130) includes a metal layer
and a carbon nanotube film.