Variable Diameter Conduit Tubes for Crosstalk Attenuation
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Solution Overview
Problem
Conventional communication cables face challenges in reducing crosstalk between twisted pairs and power conductors, especially with increasing power requirements and data transmission speeds, while also needing to meet stringent electrical, flame retardancy, and smoke suppression standards.
Innovation Solution
The development of high-performance multi-media communication cables with a central core defining individual conductor pair channels, utilizing conduit tubes with varying shapes and materials to provide optimal electrical and mechanical properties, and incorporating conductive materials to attenuate crosstalk and interference, while using polymer blends for reduced flame spread and smoke generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conduit tubes with varying dimensions are used to reduce crosstalk between conductor pairs, then electrical performance is improved, but device complexity increases
Solution Approach 1:
The conduit tube incorporates varying wall thicknesses and dimensions at different locations along its length. Specifically, the tube has a first wall thickness at a first location and a second wall thickness at a second location, creating local variations in the electromagnetic shielding properties. This local quality variation reduces crosstalk between adjacent conductor pairs while maintaining overall structural integrity and electrical performance.
Solution Approach 2:
The conduit tube is divided into multiple sections along its length, each with different dimensional characteristics. The tube includes varying inside diameters, outside diameters, and wall thicknesses at different segments. This segmentation allows each section to be optimized for reducing crosstalk between specific conductor pairs, improving overall electrical performance without requiring complete redesign of the entire cable structure.
2Object-affected harmful factors
If polymer blends with inorganic fillers are used to reduce flame spread and smoke generation, then fire safety is improved, but manufacturing complexity increases
Solution Approach 1:
The conduit tube is constructed from a polymer blend composite material that combines organic polymers with inorganic fillers. The polymer blend includes at least one polymer and at least one inorganic filler, creating a composite material that exhibits reduced flame spread and smoke generation properties. This composite material approach achieves fire safety improvements while integrating the filler particles within the polymer matrix to maintain manufacturability through conventional extrusion processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively mitigates crosstalk and interference, supports higher power and data transmission rates, and meets advanced electrical and fire safety standards, including Category 6 and 7 specifications, while reducing material usage and weight.
Implementation Method 1
the conduit tube features each or separately have a variable radial and axial diameter and where the tube features may be filled and either solid or foamed or foamed with a solid skin layer... the undulations of the above dimensions mitigate and eliminate alien crosstalk and/or EME/RFI interferences
Implementation Method 2
incorporating conductive materials to attenuate crosstalk and interference
Implementation Method 3
using polymer blends for reduced flame spread and smoke generation
Implementation Method 4
polymer blends for reduced flame spread and smoke generation
Data Source
AI summary
The present invention describes a conduit tube like structure for high performance, multi-media communications cables with or without support separators that are of varying internal and external dimensions and wall thickness that may vary consistently or randomly and may be spirally or helically wound within or around a high performance, multi-media communications cable to vary the spacing between a high performance, multi-media communications cable and an adjacent communications cable. The conduit tube structures may be hollow, contain communications media, solid comprised of various shapes and wrapped with various windings and/or tensions. The final cable assembly may then be jacketed or taped as desired.