How to solve the problem of magnetic permeability attenuation in ultra-high permeability absorbing materials at high frequencies

With the rapid development of modern electronic technology, ultra-high magnetic permeability absorbing materials have shown wide application prospects in electromagnetic compatibility (EMC)/electromagnetic interference (EMI) solutions, RFID/NFC anti metal interference, and offshore wind turbine tower coating due to their unique electromagnetic properties. However, as the frequency increases, the magnetic permeability of ultra-high permeability absorbing materials often experiences attenuation, which poses a challenge to their application in the high frequency range. This article will explore how to solve this problem and specifically introduce Advanced Institute (Shenzhen) Technology Co., Ltd. and itsResearch Platinum brand ultra-high magnetic permeability absorbing materialInnovative achievements in this field.

1、 The reason for the problem of magnetic permeability attenuation

The magnetic permeability attenuation of ultra-high permeability absorbing materials in the high frequency range is mainly due to the following reasons:

1. Eddy current effect: Under the action of high-frequency electromagnetic fields, eddy currents are generated inside the material, resulting in a decrease in magnetic permeability.
2. Skin effect: When electromagnetic waves propagate in materials, their energy is mainly concentrated on the surface of the material, causing a decrease in internal magnetic permeability.
3. Natural resonance: When the frequency of electromagnetic waves approaches the natural resonance frequency of materials, it will cause a sharp decrease in magnetic permeability.

2、 Solution

To solveUltra high permeability absorbing materialThe problem of magnetic permeability attenuation in the high frequency range can be addressed from the following aspects:

1. Optimize material formula

   • Adding nanoparticles: By adding an appropriate amount of nanoparticles (such as graphene, carbon nanotubes, etc.), the magnetic permeability and absorption properties of the material can be significantly improved. These nanoparticles have excellent conductivity and electromagnetic properties, which can effectively suppress eddy current effects and skin effects.
   • Adjusting the real and imaginary parts of magnetic permeability: By adjusting the ratio of the real part (u ') and imaginary part (u' ') of a material's magnetic permeability, better electromagnetic wave absorption and dissipation effects can be achieved. The research platinum brand ultra-high permeability absorbing material performs well in this aspect, with a high real part of magnetic permeability and an appropriate imaginary part of magnetic permeability, which can maintain stable magnetic permeability in the high frequency range.

2. Improve manufacturing processes

   • Fine control of particle size: During the preparation process, by finely controlling the particle size of the raw materials, the microstructure of the material can be optimized, thereby improving its magnetic permeability and absorption performance.
   • Optimizing sintering process: For materials that require sintering, optimizing parameters such as sintering temperature, time, and pressure can further improve the magnetic permeability and density of the material.

3. Application of multi-layer structure design

   • Multilayer Composite: Using a multi-layer composite structure design, materials with different magnetic permeability and dielectric constants can be combined together to form a multi-layer absorber with excellent absorption performance. This structure can more effectively absorb and dissipate electromagnetic waves, thereby improving the overall performance of the material.
   • Gradient design: By using gradient design, the magnetic permeability and dielectric constant of the material gradually change in the thickness direction, which can further optimize the material's absorption performance.

4. Utilizing new materials and technologies

   • New Magnetic Materials: Exploration and DevelopmentNew magnetic materialsMaterials such as ferrite and soft magnetic alloys have higher magnetic permeability and better absorption performance at high frequencies.
   • Microwave absorption technology: By combining microwave absorption technologies such as frequency selective surface (FSS), artificial magnetic conductor (AMC), etc., the absorption performance of materials can be further improved.

3、 Innovative achievements of Advanced Institute (Shenzhen) Technology Co., Ltd

As a leading enterprise in this field,Advanced Institute (Shenzhen) Technology Co., LtdSignificant achievements have been made in the research and application of ultra-high permeability absorbing materials. The research platinum brand ultra-high permeability absorbing material produced by the company maintains stable magnetic permeability in the high frequency range and exhibits excellent absorbing performance.

1. Material characteristics

   • The research platinum brand ultra-high permeability absorbing material has a high real part of magnetic permeability and an appropriate imaginary part of magnetic permeability, which can effectively absorb and dissipate electromagnetic waves in the high frequency range.
   • This material has a wide absorption frequency band and can cover a wide range of frequency bands from low to high.
   • The thickness and shape of the material can be customized according to customer needs to meet the requirements of different application scenarios.

2. application area

   • Research Platinum brand ultra-high permeability absorbing materials play a key role in EMC/EMI solutions, effectively reducing electromagnetic interference and ensuring the normal operation of electronic devices.
   • In terms of RFID/NFC anti metal interference, this material can significantly reduce metal eddy current phenomena, improve communication recognition response and effective recognition distance.
   • In the field of offshore wind turbine tower coating, the research platinum brand ultra-high magnetic permeability absorbing material can effectively reduce electromagnetic wave interference and improve the overall performance of wind farms.

4、 Conclusion

Ultra high permeability absorbing materialThe problem of magnetic permeability attenuation at high frequencies is a complex challenge, but it can be effectively solved by optimizing material formulations, improving manufacturing processes, applying multi-layer structural designs, and utilizing new materials and technologies. Advanced Institute (Shenzhen) Technology Co., Ltd. and its platinum brand ultra-high permeability absorbing materials have achieved significant results in this field, providing high-quality solutions for the market. In the future, with the continuous advancement of technology and the increasing market demand, the application fields of ultra-high magnetic permeability absorbing materials will be more extensive, and the market prospects will also be broader.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.