Cable Wire Arrangement for Low-Frequency Crosstalk Reduction
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Solution Overview
Problem
USB Type-C cables experience high low-frequency cross-talk between signal wires, particularly between SBU1, SBU2, CC, and USB 2.0 signals, due to their existing wire arrangements.
Innovation Solution
The cable design includes differential signal wires, a detection signal wire, and auxiliary signal wires arranged at the outer periphery, with each pair of differential signal wires separated by the detection and auxiliary signal wires, increasing the distance between them and shielding to reduce low-frequency cross-talk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the detection signal wire and auxiliary signal wire are arranged adjacent to each other in the existing cable structure, then the cable structure is compact and simple, but low frequency cross talk between these wires is too high
Solution Approach 1:
The patent introduces differential signal wire pairs as intermediary elements positioned between the detection signal wire and auxiliary signal wire. These differential pairs act as shielding barriers that block electromagnetic interference, thereby reducing low frequency cross talk. The differential signal wires serve as a mediator that protects the detection and auxiliary signal wires from mutual interference while maintaining cable structure integrity.
Solution Approach 2:
The patent reorganizes the wire layout by transitioning from a planar arrangement to a three-dimensional configuration where detection signal wire and auxiliary signal wire are separated in radial direction and positioned at different angular positions around the central axis. This spatial redistribution in multiple dimensions increases the effective distance between interfering wires and reduces cross talk coupling.
2Object-affected harmful factors
If the distance between detection signal wire and auxiliary signal wire is increased by rearranging wires, then low frequency cross talk is reduced, but the cable structure becomes more complex
Solution Approach 1:
The patent combines multiple signal wires into differential signal wire pairs, where each pair consists of two wires working together. By merging the functionality of individual wires into paired differential structures, the patent achieves both interference reduction through the differential configuration and structural organization that simplifies the overall cable design despite the increased wire count.
Solution Approach 2:
The patent segments the cable into distinct functional zones: an inner region containing lower speed signal wires, and an outer region containing high speed differential signal wire pairs, detection signal wire, and auxiliary signal wire. This segmentation separates different signal types spatially, reducing interference between speed tiers while maintaining manageable structural complexity through zoned organization.
Data Source
AI summary
A cable (100) includes a plurality of wires (10) and a jacket (20) enclosing the wires. The wires includes a plurality of differential signal wires (11) for transmitting high speed signal, a detection signal wire (12), at least one auxiliary signal wire (13), and a plurality of lower speed signal wires (14). All of the differential signal wires, the detection signal wire and the at least one auxiliary signal wire are arranged at an outer peripheral of and enclosing the lower signal wires. Each two adjacent differential signal wire pairs are separated by one of the detection signal wire and the at least one auxiliary signal wire.