Radio frequency cable with integrated polytetrafluoroethylene insulating surface silver-plating outer conductor, and machining method for radio frequency cable

Abstract

The invention discloses a radio frequency cable with an integrated polytetrafluoroethylene insulating surface silver-plating outer conductor, and a machining method for the radio frequency cable. The machining method comprises the following steps: a) firstly, performing roughening treatment on the surface of an integrated expansion polytetrafluoroethylene insulating layer to increase the adhesion surface area; b) secondly, cleaning the surface of the integrated expansion polytetrafluoroethylene insulating layer; c) thirdly, performing sensitizing and activating treatment on the surface of the integrated expansion polytetrafluoroethylene insulating layer; d) fourthly, forming a chemical deposition silver layer on the integrated expansion polytetrafluoroethylene insulating layer; e) finally, forming an electroplating thickening silver layer on the chemical deposition silver layer. According to the radio frequency cable and the machining method thereof, an integrated expansion polytetrafluoroethylene insulating core cable is subjected to surface roughening, surface cleaning, surface sensitizing and activating treatment, and an integrated pure-silver outer conductor is formed by utilizing the chemical deposition silver layer and the electroplating thickening silver layer, so that the density, the continuity, the uniformity and the adhesion force of the integrated pure-silver outer conductor are ensured; the conductive performance and the firmness of the integrated pure-silver outer conductor are improved; therefore, the radio frequency cable has the characteristics of light weight, small size, and high bendability and flexibility.

Description

technical field [0001] The invention relates to a radio frequency cable and a processing method thereof, in particular to a radio frequency cable with an integrally expanded polytetrafluoroethylene insulating surface and an integral silver-plated outer conductor and a processing method thereof. Background technique [0002] The common coaxial radio frequency cable products on the market are mainly used for radio frequency connection feeders in communication, radar, satellite and other electronic equipment. Its main structural form (from inside to outside) is: inner conductor, insulation, outer conductor and outer sheath . The structure of the outer conductor of the flexible coaxial cable generally includes metal braiding, metal tape wrapping, metal braiding and metal tape wrapping, etc. Among them, the bending performance of the braided outer conductor is better, but the transmission loss is large, and the shielding performance is poor; the transmission loss of the metal ta...

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Problems solved by technology

Chinese patent 201320015443.9 describes the process of using copper plating on the surface of polyethylene insulation to process the shielding layer of low-frequency cables, but due to material properties, cables with this structure are not suitable for high-frequency transmission

Chinese patent 201310492911.6 describes the technology of copper plating on the surface of expanded PTFE, but the application of this technology to silver plating on the surface of expanded PTFE insulated core wires with a certain continuous length and circular cross-section still needs to solve a series of technical key points

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