Ribbon Cable Magnetic Shielding for Signal Noise Reduction
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Solution Overview
Problem
Electronic devices experience significant signal noise due to internal and external interference, which degrades the quality of electrical signals, particularly in sensitive applications like hi-fi apparatuses and electronic switching circuits.
Innovation Solution
Integrate flat-tape magnetic strips or magnetic films with alternating polarities into electrical components or cables to generate a strong, static magnetic field that shields against interference, using materials like permanent magnets and ferrofluids to enhance signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrical cables or ribbon cables are used without magnetic shielding, then the device structure remains simple and production costs are low, but signal noise from internal and external interference degrades signal quality
Solution Approach 1:
The magnetic strip is integrated within the ribbon cable structure itself, with magnets embedded in the substrate that forms part of the cable assembly. This nesting approach provides magnetic shielding functionality without requiring separate external shielding components, thus improving signal quality while maintaining relatively simple overall structure
Solution Approach 2:
The ribbon cable combines conventional conductive elements with magnetic materials (permanent magnets arranged in alternating polarity patterns) within a single integrated substrate. This composite structure provides both electrical conduction and magnetic shielding properties simultaneously, addressing signal quality issues without significantly increasing structural complexity
2Reliability
If magnetic shielding is added to reduce signal noise, then signal quality improves, but the manufacturing process becomes more complex
Solution Approach 1:
The magnetic shielding is divided into discrete permanent magnets arranged in alternating polarity segments along the length of the ribbon cable. This segmentation allows for modular manufacturing where standard magnet components can be positioned and secured to the cable substrate using conventional techniques, avoiding the need for complex continuous magnetic shielding fabrication
Solution Approach 2:
A non-conductive substrate serves as an intermediary element that holds the permanent magnets in fixed alternating polarity arrangements and integrates them with the cable structure. This mediator component simplifies manufacturing by providing a platform for magnet assembly and securing, making the integration process more straightforward
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces signal noise by at least 85 dB, minimizing interference from both internal and external sources, enabling clearer signal transmission and reducing crosstalk between conductors.
Implementation Method 1
at least one flat-tape magnetic strip and/or at least one magnetic film, which is arranged on at least one flat side of the ribbon cable and extends over at least a portion of the longitudinal extent of the ribbon cable
Implementation Method 2
The magnetic field generator used is therefore at least one flat-tape magnetic strip and/or a magnetic film... Such elements can be acquired commercially
Implementation Method 3
The electrical conductor or conductors to be shielded can furthermore be surrounded by a ferrofluid
Data Source
AI summary
The invention relates to electric devices by which electrical signals are transmitted, such as e.g. a ribbon cable, an integrated semiconductor component, an electrical circuit arrangement or another electrical cable.