Segmented Shielding Tape Layout for Low-Crosstalk Data Cables
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Solution Overview
Problem
Conventional data cables are bulky and expensive due to their complex shielding arrangements, which can be inefficient in reducing signal interference and crosstalk among twisted pairs of conductors.
Innovation Solution
A cable design featuring a first and second shielding tape with discontinuous conductive shielding segments on substrates, spaced both longitudinally and radially, which surround twisted pairs of conductors to reduce crosstalk and signal attenuation, eliminating the need for a dedicated ground wire and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional shielding arrangements are used, then signal interference and crosstalk are reduced, but the cable becomes bulky and expensive to manufacture
Solution Approach 1:
The continuous shielding layer is divided into discrete conductive shielding segments spaced at intervals along the cable length. Each segment provides localized shielding for specific twisted pairs, eliminating the need for continuous shielding material while maintaining effective crosstalk reduction between adjacent pairs.
Solution Approach 2:
Shielding is applied locally only where needed between specific twisted pairs rather than providing uniform continuous shielding throughout the entire cable. The conductive segments are positioned to provide targeted electromagnetic interference protection at critical interfaces between adjacent conductor pairs.
2Object-affected harmful factors
If continuous shielding is used, then electromagnetic protection is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The shielding structure is segmented into discrete conductive elements rather than using continuous shielding material. This segmentation reduces material costs and simplifies the manufacturing process while maintaining effective electromagnetic protection through the distributed arrangement of conductive segments.
Solution Approach 2:
The patent uses cost-effective conductive materials in discrete segment form rather than expensive continuous shielding materials. The simplified structure reduces manufacturing complexity and overall cost while achieving the required electromagnetic compatibility performance.
3Object-affected harmful factors
If complex shielding structures are used, then shielding effectiveness is improved, but the cable size and weight increase
Solution Approach 1:
The shielding is implemented using spaced conductive segments rather than bulky continuous shielding layers. This segmented approach provides effective alien crosstalk protection while minimizing the volume occupied by shielding materials, resulting in a more compact cable design.
Solution Approach 2:
The conductive shielding segments are implemented as thin discrete elements rather than thick continuous shielding layers. This allows effective electromagnetic protection with minimal impact on cable diameter and overall size.
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 design provides effective shielding against alien crosstalk and electromagnetic interference, enhancing electromagnetic compatibility and reducing signal attenuation at high frequencies, while maintaining data transmission quality equivalent to TIA Category 6A cables with a more cost-effective and less complex structure.
Implementation Method 1
The first shielding tape extends between the first and second twisted pairs of conductors and between the second and third twisted pairs of conductors... The second shielding tape extends between the third and fourth twisted pairs of conductors and between the first and fourth twisted pairs of conductors
Data Source
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Figure 3~5
AI summary
A cable includes a first twisted pair of insulated conductors, a second twisted pair of insulated conductors, a shielding tape, and an outer jacket surrounding the first twisted pair of insulated conductors, the second twisted pair of insulated conductors and the shielding tape. The shielding tape includes a substrate and a plurality of conductive shielding segments. The plurality of conductive shielding segments is disposed on the substrate. Each conductive shielding segment is spaced from each immediately adjacent conductive shielding segment in a longitudinal direction.