Flexible type radio-frequency coaxial cable of smooth aluminum tube external conductor and production method thereof

Abstract

The invention relates to a flexible type radio-frequency coaxial cable of a smooth aluminum tube external conductor and a production method thereof, related to the improvement of the radio-frequency coaxial cable of the smooth aluminum tube external conductor, in particular to a preparation method for enhancing the bending performance and improving the flexible performance of the cable. The flexible type radio-frequency coaxial cable of the smooth aluminum tube external conductor comprises a smooth aluminum tube internal conductor, an internal skin layer, a foaming insulation layer, an external skin layer, the smooth aluminum tube external conductor, a hot melt adhesive layer and an external protection bush layer; the internal skin layer is extruded outside the smooth aluminum tube internal conductor and the foaming insulation layer is arranged outside the internal skin layer; the external skin layer is arranged outside the foaming insulation layer and the smooth aluminum tube external conductor is arranged outside the outer skin layer; the hot melt adhesive layer is coated outside the smooth aluminum tube external conductor and the external protection bush layer is extruded outside the hot melt adhesive layer.

Description

technical field [0001] The invention relates to a soft smooth aluminum tube outer conductor radio frequency coaxial cable and a manufacturing method thereof, and relates to an improvement of the smooth aluminum tube outer conductor radio frequency coaxial cable. In particular, it relates to a preparation method for improving bending performance and flexibility of cables. Background technique [0002] RF coaxial cables for mobile communication are mainly used in the antenna feeder system as the main feeder and sub-feeder for transmitting and receiving. In the current manufacturing process, the outer conductor is corrugated to change the bending performance of the cable. The smooth tube outer conductor RF coaxial cable is not corrugated. Since the outer conductor has no corrugation, the growth is saved and the manufacturing process is reduced. Effect on standing waves. However, the flexibility is too poor to withstand repeated bending, and it is inconvenient to lay and use. ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is realized mainly by taking: using a kind of adhesive as the outer skin material on the outer skin layer of the foamed insulator, adopting high-frequency heating after welding and adopting multi-pass drawing to completely bond the foaming layer and the outer conductor aluminum strip Together, hot melt adhesive is also added between the outer conductor aluminum strip and the sheath layer, so that the two are also completely bonded together. Three technical measures to improve the bending performance, improve the deficiencies of bending performance and poor flexibility, and ensure good Signal transmission performance, meet the requirements of the cable

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