Shaped Separator for Communication Cable Crosstalk Reduction
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Solution Overview
Problem
Conventional communication cables experience interference due to electromagnetic coupling between twisted wire pairs, which degrades performance, and existing solutions to mitigate this, such as thick fillers or individual shielding, are costly and do not provide optimal flame performance and dielectric properties.
Innovation Solution
A communication cable with a separator featuring geometric or shaped ends that create air pockets to separate twisted wire pairs, reducing interference while improving flame and dielectric properties using less material, thereby reducing manufacturing costs and enhancing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional thick fillers are used to physically increase distance between wire pairs, then interference is reduced, but manufacturing cost increases and flame performance deteriorates
Solution Approach 1:
The separator uses a porous structure with air pockets instead of solid thick filler material. The porous configuration provides sufficient physical distance between wire pairs to reduce electromagnetic interference while using minimal material, thereby reducing manufacturing costs and improving flame performance by eliminating excessive combustible material.
Solution Approach 2:
The separator employs geometric or shaped ends with specific dimensional parameters (width greater than length) that create optimal spacing between wire pairs. By carefully controlling the size and shape parameters of the separator elements, the design achieves effective interference reduction without requiring thick uniform fillers, thus reducing material usage and cost.
2Object-affected harmful factors
If conventional thick fillers are used to physically increase distance between wire pairs, then interference is reduced, but flame performance deteriorates
Solution Approach 1:
The porous separator structure with air pockets minimizes the volume of combustible material in the cable. By replacing solid filler with a porous configuration, the design maintains effective wire pair spacing for interference reduction while significantly reducing flame propagation risk and improving overall flame performance.
Solution Approach 2:
The design extracts only the essential function of the filler (providing physical distance between wire pairs) while removing the excessive material that causes poor flame performance. The separator achieves the necessary spacing function with minimal material presence, eliminating the harmful effect of excessive combustible filler on flame performance.
3Object-affected harmful factors
If individual shielding is applied to twisted pairs, then interference is reduced, but manufacturing cost increases
Solution Approach 1:
Instead of applying individual shielding to each twisted pair, the invention merges the interference reduction function into a single shared separator structure that serves all wire pairs simultaneously. This consolidated approach eliminates the need for multiple separate shielding components, thereby reducing manufacturing cost while maintaining effective interference reduction.
Solution Approach 2:
The separator is designed as a multi-functional element that provides both physical spacing between wire pairs and electromagnetic interference reduction for all pairs simultaneously. This universal component replaces the need for individual shielding on each pair, achieving the same interference protection function at lower manufacturing cost.
4Object-affected harmful factors
If individual shielding is applied to twisted pairs, then interference is reduced, but flame performance deteriorates
Solution Approach 1:
The separator combines multiple functions (physical spacing and electromagnetic interference reduction) into a single non-combustible or low-combustibility component. This merged solution protects all wire pairs from interference without the added combustible material that would result from individual shielding, thereby maintaining superior flame performance.
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 separator effectively reduces crosstalk interference, improves smoke and flame performance, and enhances dielectric properties by positioning wire pairs radially outward, using less material and introducing air pockets, which also improves the cable's optical density and reduces combustible material.
Implementation Method 1
interference or near end crosstalk occurs due to electromagnetic coupling between the twisted pairs within the cable
Data Source
AI summary
A communication cable that comprises a jacket, a twisted wire group, and a single separator received in a core of the jacket. The separator includes a body that has first and second segments adapted to define quadrants in the communication cable. The first and second segments are substantially perpendicular to each other and define a junction point of the first and second segments. Each segment includes a main portion and a terminal end remote from the junction point of the segments. Each of the terminal ends has a shape such that each of the terminal ends is wider than the main portions of the segments. An air pocket is defined between the terminal ends of the first and second segments. The air pocket includes a gap sized such that the air pocket is substantially enclosed, wherein the twisted wire group is prevented from entering the air pocket.