Elliptical USB Cable Inner Space for Signal Attenuation
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Solution Overview
Problem
The circular radial cross-section of existing USB 4 transmission cables restricts the arrangement of multiple wires, leading to signal attenuation and limits the cable's length for long-distance signal transmission, necessitating the use of costly attenuation compensation chips.
Innovation Solution
The USB transmission cable is designed with an elliptical inner space to accommodate larger wire diameters, reducing signal attenuation and eliminating the need for compensation chips by arranging wires in a manner that maximizes space utilization and supports the wire structure to maintain an elliptical cross-section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a circular radial cross-section is used in the transmission cable, then the cable structure is simple and easy to manufacture, but the inner space is limited which restricts wire arrangement and causes signal attenuation
Solution Approach 1:
The patent applies asymmetry by changing the cable's radial cross-section from a conventional circular shape to an elliptical shape. This asymmetric geometric modification increases the inner space volume while maintaining structural integrity, allowing for improved wire arrangement and reduced signal attenuation without significantly complicating the manufacturing process
2Quantity of substance
If multiple wires are arranged in a small circular space, then the cable can meet USB 4 specification requirements, but the wire diameter must be reduced which increases signal attenuation
Solution Approach 1:
The patent applies dimensionality change by transitioning from a circular cross-section to an elliptical cross-section. This geometric transformation effectively utilizes space in a different dimensional configuration, allowing multiple wires to be arranged with adequate spacing. The elliptical shape provides additional radial space that enables larger wire diameters while accommodating all required wires, thereby reducing signal attenuation
3Length of moving object
If the cable length is extended for long-distance transmission, then the cable can serve more physical applications, but signal attenuation increases requiring attenuation compensation chips
Solution Approach 1:
The elliptical cross-section design creates additional internal space that allows for optimized wire routing and larger conductor cross-sectional areas. This asymmetric geometry enables the cable to achieve lower attenuation per unit length, which directly supports extended cable lengths for long-distance transmission without requiring additional attenuation compensation chips, thereby reducing system complexity and cost
Data Source
AI summary
A USB cable structure includes a cable body and a plurality of wires. The cable body extends a length along an axial direction and forms an inner space, and the inner space forms an elliptical cross-section in the radial section of the cable body perpendicular to the axial direction. The plurality of wires are arranged in the elliptical inner space of the cable body, and the diameter of the wire can be increased by the enlarged elliptical inner space to reduce the attenuation of the transmission signal, thereby extending the length of the transmission cable to transmit the signal to a longer distance without the assistance of the attenuation compensation chip.