Leaky-waveguide coaxial cable

Abstract

The invention discloses a leaky-waveguide coaxial cable and belongs to the technical field of communication cables. The leaky-waveguide coaxial cable comprises a leaky-waveguide coaxial cable body and an optical cable, and is characterized in that the optical cable and the leaky-waveguide coaxial cable body are integrated and jointly form a structure with 8-shaped cross section. The leaky-waveguide coaxial cable has the advantages that technical links during manufacturing is evidently reduced, an independent mould is saved, cabling efficiency is favorably improved, and manufacturing cost can be reduced. Arrangement and construction cost is beneficially saved, and maintenance and protection are facilitated. Since the optical cable and the leaky-waveguide coaxial cable body form the structure with 8-shaped cross section, resistance to external extrusion can be improved obviously, joint connection of the leaky-waveguide coaxial cable body and joint connection of the optical cable are beneficially facilitated during arrangement, mutual interference is avoided and arrangement quality is guaranteed beneficially.

Description

technical field [0001] The invention belongs to the technical field of communication cables, in particular to a leaky waveguide coaxial cable. Background technique [0002] The leaky coaxial cable not only has the function of signal transmission, but also has the dual function of antenna. Through the control of the opening of the outer conductor, the controlled electromagnetic wave energy can be radiated and received evenly along the line to achieve the coverage of the blind area of ​​the electromagnetic field. In order to achieve the purpose of smooth mobile communication. This kind of cable is mainly used in tunnels, wells, subways, underground buildings and mountainous areas where radio signals are poorly propagated. [0003] The structure of the known leaky coaxial cable is composed of an inner conductor, an insulating layer, an outer conductor with a leakage hole (also called a slot) and an outer sheath outside the outer conductor from the inside to the outside. The le...

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Problems solved by technology

[0004] However, since the above two cables are independently manufactured during the manufacturing process, they can only be laid separately during the laying process, resulting in the following technical problems: one is to In terms of manufacturing, due to separate manufacturing, it not only increases the process links and molds, but also increases production costs and affects production efficiency; second, in terms of laying and use, due to independent laying, the project volume is large and the laying efficiency is low; In terms of management and protection, because the two cables are self-contained, it increases the difficulty of management and protection; fourth, in terms of strength, because they are in an independent state and are not related to each other, the overall compressive strength is relatively fragile

[0005] According to the applicant's analysis, under the enlightenment of the leaky coaxial cable and optical cable structure in the prior art, it seems that there is no insurmountable problem in combining the two into one. Especially for manufacturers, it can significantly save costs and provide convenience for laying. However, due to the difficulty of connecting the joints of the leaky coaxial cable and the joints of the optical cable at the same time, during the laying operation Often difficult to solve, this is the crux of the combination of leaky coax and fiber optic cables that has not been seen so far in published patents and non-patent literature

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