Flat Coaxial Ribbon Cable Layout for Thin, Low-Interference Signaling
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Solution Overview
Problem
Existing flexible ribbon cables fail to effectively prevent signal leakage and noise interference during the transmission of RF signals or high-speed signals, limiting their transmission distance and performance in space-constrained electronic devices.
Innovation Solution
A flexible flat coaxial ribbon cable design featuring a three-layer coaxial cable structure without an outer insulation layer, with coaxial cables arranged side by side and encased in a gel film sheath, providing electrical connections and shielding to reduce interference and signal loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional flexible ribbon cable structure is used, then the cable achieves flexibility and thin profile, but signal leakage and noise interference occur during RF signal transmission
Solution Approach 1:
The cable is divided into multiple independent coaxial channels, each with its own inner conductor, insulation layer, and outer conductor layer. This segmentation isolates signal paths and prevents interference between adjacent signals, resolving the signal leakage problem while maintaining flexibility through the modular structure.
Solution Approach 2:
The patent implements a nested coaxial structure where the inner conductor is enclosed by the insulation layer, which is in turn enclosed by the outer conductor layer. This nested arrangement creates electromagnetic shielding that prevents signal leakage and noise interference, directly addressing the reliability issue.
2Object-affected harmful factors
If coaxial cable structure with outer insulation layer is used, then signal shielding is improved, but cable thickness increases
Solution Approach 1:
The patent removes the outer insulation layer from traditional coaxial cables, extracting only the essential shielding components (inner conductor, insulation layer, outer conductor layer). This extraction maintains the electromagnetic shielding function while reducing overall cable thickness for use in space-constrained devices.
Solution Approach 2:
The patent employs thin-film gel adhesive layers to bond the coaxial cable layers together, replacing traditional thick outer insulation. This use of flexible thin films maintains structural integrity and shielding effectiveness while minimizing cable thickness.
3Reliability
If multiple coaxial cables are arranged side by side, then signal transmission reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges multiple coaxial cable structures into a single integrated flexible flat coaxial ribbon cable by bonding them together with gel adhesive layers. This combining approach maintains the reliability benefits of multiple shielded channels while simplifying the overall structure compared to separate cables, reducing manufacturing complexity.
Data Source
AI summary
A flexible flat coaxial ribbon cable, equipped with a plurality of coaxial cables arranged side by side to reduce the degree of interference and loss during transmitting RF signals or high-speed signals through the coaxial cables, thereby effectively increasing the transmission distance for RF signals or high-speed signals. Additionally, the coaxial cables used in the flexible flat coaxial ribbon cable of this application omits an outer insulation layer, allowing the thickness of the flexible flat coaxial ribbon cable to be effectively reduced for use in spaces with height constraints.