Conductive Mesh Shielding Material for Wideband Magnetic Fields
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Solution Overview
Problem
Existing electromagnetic wave shielding materials do not provide an excellent magnetic field shielding effect across a wide frequency range.
Innovation Solution
An electromagnetic wave shielding material is configured with a magnetic layer sandwiched within conductive meshes on both surfaces, enhancing the magnetic field shielding effect by ensuring both surfaces of the magnetic layer are electrically conductive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conductive layer and magnetic layer are stacked one on top of another, then electric field shielding and magnetic field shielding are achieved, but the magnetic field shielding effect is insufficient in wide frequency range
Solution Approach 1:
The conductive layer is segmented into a mesh structure with multiple conductive wires arranged in patterns (e.g., grid, honeycomb). This segmentation increases the surface area of conductive material while maintaining flexibility and allowing the magnetic layer to be sandwiched between mesh layers, improving magnetic field shielding across wider frequency ranges.
Solution Approach 2:
The magnetic layer is sandwiched between two conductive mesh layers, creating a nested structure where the magnetic layer is enclosed within the conductive mesh. This configuration allows the magnetic material to interact with electromagnetic fields from both sides, enhancing magnetic field shielding effectiveness across broad frequency ranges.
2Reliability
If conductive layer and magnetic layer are stacked, then shielding effect is obtained, but flexibility and resistance to deformation are reduced
Solution Approach 1:
The conductive mesh is constructed from thin, flexible conductive wires that can bend and deform without breaking. The mesh structure inherently provides flexibility while maintaining electrical conductivity, allowing the shielding material to conform to various shapes and applications without compromising shielding effectiveness.
Solution Approach 2:
The shielding material combines different materials with complementary properties: conductive materials (e.g., metal wires, conductive polymers) for electrical conductivity and mesh structure for flexibility, combined with magnetic materials (e.g., ferrite, magnetite) for magnetic field shielding. This composite structure achieves both shielding effectiveness and mechanical flexibility.
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 configuration enhances the magnetic field shielding effect across a wide frequency range, providing flexibility and resistance to deformation.
Implementation Method 1
Since the conductive layer has an electric field shielding property
Implementation Method 2
the magnetic layer including a magnetic material having an excellent magnetic property
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
An electromagnetic wave shielding material (1) according to the present disclosure includes: magnetic layer (30) including a magnetic material; and conductive meshes (20) disposed on both surfaces of the magnetic layer (30).