Research on welding technology of ultra light RF coaxial cable components for aerospace applications

Abstract With the development of space satellite models towards miniaturization, the demand for weight reduction of subsystems and single equipment has increased sharply. As RF cable components serve as microwave link transmission channels, the large amount of satellite usage puts higher requirements on their lightweight. This article proposes a high reliability welding process method for the silver plated aramid fiber outer shielding layer of ultra light RF coaxial cables, which addresses issues such as poor solder wettability and low solder filling rate. This improves the solderability of the silver plated aramid fiber shielding layer, increasing the solder filling rate from the original 60% to over 90%, meeting the quality control requirements of solder joints in aerospace cable components, and achieving batch stable welding of ultra light RF cable components with high reliability and high solder filling rate.