Data Transmission Cable Pairs with Flat Conductors
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Solution Overview
Problem
Data transmission cables suffer from crosstalk issues due to electromagnetic field fringing between circular cross-section conductors, which affects signal transmission and introduces impairments like near-end and far-end crosstalk.
Innovation Solution
The use of paired electrical conductors with asymmetric, flat side surfaces and a separator insulation portion between them, which are helically twisted to maintain a uniform spacing and reduce electromagnetic field fringing, thereby minimizing crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If circular cross-section conductors are used in data transmission cables, then the manufacturing process is simple and conventional, but electromagnetic field fringing occurs between conductors causing crosstalk impairments
Solution Approach 1:
The patent applies asymmetry by changing the conductor cross-sectional shape from circular to D-shaped or flattened configuration. This asymmetric geometry creates flat opposing surfaces between conductors that confine electromagnetic fields, reducing field fringing and crosstalk while maintaining manufacturing feasibility through modified extrusion processes
2Reliability
If conductors are twisted to reduce crosstalk, then signal integrity improves, but the complexity of the cable structure increases
Solution Approach 1:
The patent applies segmentation by dividing the insulation system into distinct functional components: a separator insulation layer positioned between conductors to confine fields, and an outer insulation layer providing overall protection. This segmented approach enables effective crosstalk reduction through controlled field confinement while maintaining a manageable and systematic cable structure
3Object-affected harmful factors
If flat side surfaces are positioned facing each other between conductors, then electromagnetic field confinement is improved reducing crosstalk, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies self-service through the self-aligning geometry of D-shaped or flattened conductors with flat opposing surfaces. This configuration naturally maintains consistent spacing and alignment between conductors during twisting and cable assembly, eliminating the need for complex external alignment mechanisms or precision control systems while effectively confining electromagnetic fields
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
This configuration effectively reduces crosstalk and maintains signal integrity by confining the electromagnetic field within the conductor pair, meeting impedance and resistance requirements for data transmission applications.
Implementation Method 1
The separator portion is interposed between and separates the respective flat side surfaces of the first and second conductors... effectively reduces crosstalk and maintains signal integrity by confining the electromagnetic field within the conductor pair
Implementation Method 2
The first and second conductors are helically twisted about one another such that the flat side surfaces take the form of helically wound flat surfaces that are substantially parallel to one another along the length of the pair
Data Source
AI summary
A data transmission pair includes first and second longitudinally extending electrical conductors each having a longitudinally extending, substantially flat side surface. The first and second conductors are paired such that their respective flat side surfaces face one another. The pair further includes an insulation cover having a separator portion and surrounding the first and second conductors. The separator portion is interposed between and separates the respective flat side surfaces of the first and second conductors.