USB-C Communication Cable Layout for Longer Signal and Power Reach
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Solution Overview
Problem
Conventional USB Type-C cables are limited by the shorter of communication or power supply distances due to the standard's specifications, restricting cable length and deteriorating communication quality when lengthened.
Innovation Solution
A communication cable design with reduced core count, thicker conductors, and a configuration channel wire for orientation detection, allowing for increased communication and power supply distances while maintaining reversibility and compatibility with USB Type-C standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the cable length is increased to extend communication and power supply distances, then the communication and power supply distances are improved, but the communication quality deteriorates and the cable diameter must be increased
Solution Approach 1:
The patent changes the physical parameters of the conductor by increasing the conductor cross-sectional area from conventional sizes to 0.06mm² or more for signal wires and 0.10mm² or more for power/ground wires. This parameter change reduces electrical resistance and signal attenuation, enabling extended cable lengths (6m or more) while maintaining communication quality and power supply capability
Solution Approach 2:
The patent transitions from a conventional 17-core configuration to a simplified 5-core configuration, changing the dimensional arrangement of conductors. This reduction in core count while increasing individual conductor sizes allows for better signal integrity and power delivery over extended distances
2Reliability
If the cable diameter is increased to maintain communication quality over long distances, then the communication quality is improved, but the connector board size must be increased
Solution Approach 1:
The patent changes the conductor cross-sectional area parameter to 0.06mm² or more for signal wires and 0.10mm² or more for power/ground wires, which reduces the number of cores needed while maintaining communication quality. This allows extended cable lengths without increasing connector board size, as the quality improvement comes from thicker individual conductors rather than more cores
3Length of stationary object
If the conductor cross-sectional area is increased to extend power supply distance, then the power supply distance is improved, but the cable diameter must be increased
Solution Approach 1:
The patent increases the conductor cross-sectional area of power and ground wires to 0.10mm² or more, which reduces electrical resistance and enables extended power supply distances (6m or more) while maintaining voltage levels. This parameter change allows longer power delivery without proportionally increasing cable diameter
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
A communication cable includes two first differential pair wires for transmitting highspeed differential signals, a second differential pair wire for transmitting low-speed differential signals, a power wire, a ground wire, and a configuration channel wire for detecting the front and back orientation of a plug, and the communication cable is devoid of other first differential pair wires than the two first differential pair wires.