Low-loss stationary-phase coaxial radio-frequency cable and manufacturing process thereof

Abstract

The invention relates to a low-loss stationary-phase coaxial radio-frequency cable and a manufacturing process thereof. A plurality of layers of microporous polytetrafluoroethylene film insulating layers are wrapped outside the core of a silver-plated copper alloy wire; a silver-plated copper bandlet inner shield is wrapped outside the plurality of microporous polytetrafluoroethylene film insulating layers; a layer of silver-plated copper wire outer conductor is woven outside the silver-plated copper bandlet inner shield; and a layer of fluorinated ethylene propylene jacket is wrapped outside the silver-plated copper wire outer conductor by pressing. The process comprises the following steps of: 1, plating silver on a copper alloy wire in-core conductor; 2, wrapping the microporous polytetrafluoroethylene film insulating layers; 3, wrapping the silver-plated copper bandlet inner shield; 4, weaving the silver-plated copper wire outer conductor; and 5, wrapping the fluorinated ethylene propylene jacket by pressing. The process has the characteristics of reducing the dielectric constant of an insulating medium, reducing the attenuation of the cable and guaranteeing the high shielding efficiency of the cable.

Description

technical field [0001] The patent of the invention relates to a low-loss stable coaxial radio frequency cable and its manufacturing process, which is especially suitable for weapon equipment systems such as early warning aircraft phased array radar, electronic countermeasures, satellite and missile monitoring, and digital phase-sensitive electronic systems. Background technique [0002] At present, when processing high-temperature-resistant radio frequency cables in my country, the inner conductor uses ordinary silver-plated copper wire; the insulating material uses solid-core polytetrafluoroethylene insulation, which is processed at room temperature; the outer conductor only uses a single braided silver-plated copper wire. The frequency of use of the cable is not high, the loss is large, and more importantly, the phase change is too large in the use environment that requires phase stability. Contents of the invention [0003] In view of the shortcomings of the existing te...

AI Technical Summary

Problems solved by technology

The frequency of use of the cable is not high, the loss is large, and more importantly, the phase change is too large in the use environment that requires phase stability

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