Transmission Cable With Segmented Bendable And Unbendable Layers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional coaxial cables used in consumer electronics, such as mobile phones and tablets, have poor bending performance due to their thickness and hardness, which limits their flexibility and durability.
Innovation Solution
A transmission cable design featuring a main baseline layer and a superimposed line layer, with distinct unbendable and bendable parts, incorporating grounding layers, base layers, and protective layers, along with strategically placed grounding through holes, to enhance flexibility and reduce thickness, allowing for improved bending performance and manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-layer material laminating manner is used to achieve impedance matching, then the signal transmission performance is improved, but the cable thickness increases and bending performance deteriorates
Solution Approach 1:
The cable is divided into distinct layers with different functions: a first baseline layer providing mechanical support and a second baseline layer optimized for signal transmission. This segmentation allows each layer to be optimized independently, reducing overall thickness while maintaining signal transmission performance.
Solution Approach 2:
Different regions of the cable structure are assigned different material properties and thicknesses. The baseline layers use materials and thicknesses optimized for their specific functions (mechanical support vs. signal transmission), rather than using a uniform thick structure throughout, thereby reducing overall cable thickness while maintaining impedance matching.
2Reliability
If connection layers made of metals and conductive materials are used for impedance matching, then the signal transmission performance is improved, but the cable hardness increases and bending performance deteriorates
Solution Approach 1:
The patent changes the material parameters of the connection layers by using resin materials with appropriate dielectric constants instead of traditional metals and conductive materials. This parameter change maintains the necessary electrical properties for impedance matching while significantly reducing cable hardness and improving bending performance.
Solution Approach 2:
The cable employs composite material structures where resin-based connection layers are combined with baseline layers. This composite approach replaces hard metallic connection layers with flexible resin materials that maintain electrical functionality while improving cable flexibility and bending performance.
3Ease of operation
If the cable structure is simplified to improve bending performance, then the flexibility is improved, but the impedance matching capability deteriorates
Solution Approach 1:
The cable structure is segmented into functional layers where the baseline layers provide mechanical flexibility while dedicated connection layers maintain impedance matching. This segmentation allows the cable to remain flexible without sacrificing impedance matching capability.
Solution Approach 2:
Impedance matching is achieved through localized optimization of connection layer properties between specific baseline layers, rather than requiring a complex overall structure. This allows the cable to maintain simplicity and flexibility while achieving necessary impedance matching at critical interfaces.
Data Source
AI summary
The invention provides a transmission cable with a main baseline layer and a superimposed line layer. The main baseline layer includes a superimposed part, and a non-superimposed part. The superimposed line layer and the superimposed part form an unbendable part; the non-superimposed part forms a bendable par. The main baseline layer includes a first grounding layer, a first base layer stacked, a signal line layer, and a second base layer. The superimposed line layer includes a third base layer and a second grounding layer. The bendable part is small in thickness, so that the transmission cable provided by the invention has good bending performance, thereby improving the practicability of the transmission cable and prolonging the service life of the transmission cable.