Low-loss semi-flexible radio-frequency coaxial cable with thread-structure-based insulation layer

The invention discloses a low-loss semi-flexible radio-frequency coaxial cable with a thread-structure-based insulation layer. The cable comprises an inner conductor, an insulation layer, an isolatingmembrane layer, an outer conductor and an outer sheath that are arranged successively from inside to outside. The inner conductor and the outer conductor are arranged coaxially. A thread structure isformed at the outer side of the insulation layer. The isolating membrane layer that is a metal film layer or an insulating film layer or a metal-insulating composite film layer and coats the surfaceof the insulation layer is arranged between the insulation layer and the outer conductor to play a role in isolation and also enables the outer conductor to be peeled from the insulation layer. The low-loss semi-flexible radio-frequency coaxial cable has the following beneficial effects: a novel scheme different from that in the prior art is put forward; with the unique thread-structure-based insulation layer, the relative