Low-loss stable-phase cable

Abstract

The invention discloses a low-loss stable-phase cable. The cable comprises a silver-plated soft round copper wire inner conductor, a microporous polytetrafluoroethylene tape insulator, a silver-platedcopper flat tape outer conductor, a silver-plated soft round copper wire outer conductor and a fluorinated ethylene propylene sheath, wherein the outer side of the silver-plated soft round copper wire inner conductor is wrapped with the microporous polytetrafluoroethylene tape insulator, the outer side of the microporous polytetrafluoroethylene tape insulator is wrapped with the silver-plated copper flat tape outer conductor, the outer side of the silver-plated copper flat tape outer conductor is wrapped with the silver-plated soft round copper wire outer conductor, and the soft round copperwire drawing is realized through the size difference between the two wire drawing wheels; wire drawing is convenient, the efficiency is high, wire drawing is carried out in water, so that the phenomenon that a copper wire is easy to deform and break during traditional wire drawing is avoided, the copper wire is ensured to be in a low-temperature environment through underwater wire drawing, deformation of the copper wire due to local heating is avoided, the soft round copper wire is ensured to be tightly wound on the collecting roller through supporting and tightening of the first guide wheel and the second guide wheel, and the elastic retraction phenomenon of the soft round copper wire is avoided.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a low-loss phase-stable cable. Background technique [0002] In order to ensure the precise positioning of aerial phased radar arrays, satellite tracking stations, electronic countermeasures and other equipment, special low-loss phase-stable cables must be matched with them. It is reported that a low-loss phase-stable cable mainly used in aerospace has been successfully developed several years ago. Compared with ordinary RF cables, it significantly improves the frequency range, attenuation, standing wave and phase performance, etc.; compared with the current relatively high-end low-loss cables, its advantage is better phase stability. [0003] At present, in the preparation process of low-loss cables, the processing of the inner conductor of the silver-plated soft round copper wire is the basis for the preparation of low-loss cables. During the preparation process of the existing...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a low-loss phase-stable cable to solve the problem that in the preparation process of the current low-loss cable, the processing of the inner conductor of the silver-plated soft round copper wire is the basis for preparing the low-loss cable. During the preparation process of the inner conductor of the copper wire, when the collecting roller is inserted into the winding wheel, it is necessary to manually check the position of the central axis of the winding wheel, which is inconvenient for the feeding work of the collecting roller; the existing silver-plated soft round copper wire inner conductor is During the preparation process, the soft round copper wire cannot be drawn through the difference in size between the two wire pulleys; the wire drawing is inconvenient and the efficiency is low, and the copper wire is easily deformed and broken during traditional wire drawing, so it is impossible to ensure that the copper wire is in the same state. In a low-temperature environment, the copper wire is easily deformed by heat; the inner conductor of the existing silver-plated soft round copper wire is directly collected by the collection roller after being drawn, and the soft round copper wire does not go through the tensioning step, which is prone to elastic retraction The problem of phenomena

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