Polymer Composite Cable Core Reducing Tower Load
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The weight of coaxial cables on cellular towers is significant due to their material density, which increases the load on the towers and poses a design challenge for base-station architecture.
Innovation Solution
A conductive core comprising a filled-polymeric-composite material with a polymeric continuous phase and dispersed filler, surrounded by a conductive layer, is used to create a cable with reduced weight and enhanced properties, such as lower density and higher tensile strength, while maintaining electrical conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional metal conductive cores are used, then electrical conductivity is ensured, but cable weight increases significantly
Solution Approach 1:
The patent employs a composite conductive core consisting of a polymeric matrix reinforced with conductive filler particles (such as metal powders, carbon, or graphite). This composite structure combines the low density and corrosion resistance of polymers with the electrical conductivity of the filler materials, achieving a weight reduction of 50-70% compared to traditional solid metal cores while maintaining adequate electrical conductivity for cable applications
Solution Approach 2:
The patent modifies the electrical conductivity parameter of the polymeric material by varying the type, quantity, size, and distribution of conductive filler particles within the polymer matrix. By optimizing these parameters, the composite achieves the minimum required conductivity while minimizing weight, thus resolving the contradiction between weight reduction and conductivity maintenance
2Weight of moving object
If cable diameter is reduced to minimize tower load, then weight decreases, but mechanical strength may be compromised
Solution Approach 1:
The polymeric composite core provides high specific strength (strength-to-weight ratio) due to the reinforcement effect of conductive filler particles within the polymer matrix. This allows the cable to maintain adequate mechanical strength even at reduced diameters, as the composite structure distributes and bears mechanical loads more efficiently than traditional homogeneous materials
Solution Approach 2:
The conductive core is structured as a composite material with dispersed filler particles segmented throughout the polymeric matrix, creating a distributed reinforcement structure that enhances mechanical strength while maintaining flexibility and reducing overall cable diameter and weight
Data Source
AI summary
Conductive cores for use in cables, where the conductive core comprises a filled-polymeric-composite material concentrically surrounded by a conductive layer. The filled-polymeric-composite material comprises a polymeric continuous phase having dispersed therein a filler material. Such conductive cores can be employed in various cable designs and further include one or more outer layers, such as dielectric insulation layers, conductive shield layers, and jackets.