Multilayer Electromagnetic Shielding with Air Gap and Composite Materials
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Solution Overview
Problem
Existing electromagnetic shielding technologies are bulky, costly, and limited in portability, making them unsuitable for widespread use in healthcare and research settings where space and mobility are constrained.
Innovation Solution
A multilayer electromagnetic shield system comprising two electromagnetic shield stacks spaced apart by an air gap, with each stack consisting of an electric field attenuator layer and a magnetic field attenuator layer, utilizing copper mesh and Mu-Metal, respectively, along with inert plastic layers for structural integrity and portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If large shielded rooms are used for electromagnetic shielding, then shielding effectiveness is improved, but space requirements and manufacturing costs increase
Solution Approach 1:
The patent divides the shielding system into multiple discrete layers (conductive layer, magnetic shielding layer, dielectric layer) that can be stacked and configured in different arrangements. This segmentation allows the shielding function to be achieved in a compact form factor without requiring a large enclosed space, directly resolving the contradiction between shielding effectiveness and space requirements
Solution Approach 2:
The patent employs composite material structures combining different types of shielding layers (conductive, magnetic, dielectric) to achieve enhanced shielding effectiveness in a thin profile. This composite approach allows high shielding performance without increasing the overall thickness or space occupied, addressing the contradiction between shielding quality and spatial footprint
2Object-affected harmful factors
If complex liquid-cooled devices are used for electromagnetic shielding, then shielding performance is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The patent describes passive shielding layers that function without requiring external power sources, cooling systems, or active control mechanisms. The shielding is achieved through the inherent properties of the material layers themselves, eliminating the need for complex liquid-cooled devices and significantly reducing device complexity while maintaining shielding effectiveness
Solution Approach 2:
The patent employs inexpensive material layers (conductive meshes, magnetic shielding sheets, dielectric materials) that can be mass-produced and replaced if needed, replacing complex expensive active shielding systems. This approach reduces both manufacturing cost and device complexity while achieving the required shielding performance
3Object-affected harmful factors
If shielded rooms are constructed in fixed locations, then shielding effectiveness is improved, but portability decreases
Solution Approach 1:
The patent divides the shielding system into separate, modular layers that can be easily assembled, disassembled, and transported. This segmented structure enables the shielding system to be moved between different locations and adapted to various settings, directly resolving the contradiction between shielding effectiveness and portability
Solution Approach 2:
The patent describes a shielding system that can be applied to multiple different devices and settings (portable sensors, imaging devices, medical equipment) through a universal multi-layer configuration. This universality allows the same shielding principles to provide effective protection across diverse applications and locations, enhancing adaptability without compromising shielding performance
4Adaptability or versatility
If smaller sized shielding devices are created, then portability is improved, but shielding effectiveness may decrease
Solution Approach 1:
The patent uses composite material structures where multiple specialized layers (conductive, magnetic, dielectric) work together to achieve high shielding effectiveness in a compact thickness. Each layer contributes a specific shielding mechanism, allowing the overall system to maintain high performance while occupying minimal space, thus resolving the contradiction between compact size and shielding effectiveness
Solution Approach 2:
The patent employs multi-layer stacking in the thickness dimension to achieve shielding functionality without increasing the planar footprint. By utilizing the vertical dimension for layering, the system provides comprehensive shielding while maintaining a small overall profile that enhances portability, directly addressing the contradiction between size reduction and shielding performance
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
The system effectively excludes external electromagnetic noise, allowing for precise measurement of target fields in various settings without the need for large shielded rooms, offering a lightweight, cost-effective, and portable solution for electromagnetic field sensing applications.
Implementation Method 1
an electric field attenuator layer adhered to a magnetic field attenuator layer, wherein the electric field attenuator layers comprise a copper mesh
Implementation Method 2
the magnetic field attenuator layers comprise a MU-metal
Implementation Method 3
two electromagnetic shield stacks spaced apart by an airgap, wherein air gap is directly bounded by a respective magnetic field attenuator layer of the two electromagnetic shield stacks
Data Source
AI summary
A multilayer electromagnetic shielding system providing two stacks spaced apart by an air gap, wherein each stack has an electric-field-attenuating layer adhered to a magnetic-field-attenuating layer. An electromagnetically inert material may sandwich the spaced apart stacks for insulative and structural purposes.