How to improve the absorption efficiency of mobile phone magnetic isolation sheet absorbing materials in the high frequency range?

In today's highly intelligent era, mobile phones have become an indispensable part of people's lives. With the rapid development of communication technology, the operating frequency range of mobile phones continues to expand towards the high frequency band, which puts higher demands on the magnetic isolation and absorption materials inside the mobile phones. Advanced Institute (Shenzhen) Technology Co., Ltd. has been committed to research and innovation in the field of electromagnetic materials Research Platinum brand mobile phone magnetic isolation sheet absorbing materialHas a certain influence in the market. Here, we will explore how to improve the absorption efficiency of this type of material in the high frequency range.

1、 Understand the working principle of absorbing materials

AbsorberThe main function is to absorb and convert the energy of incident electromagnetic waves into other forms of energy, such as thermal energy, thereby reducing the reflection and transmission of electromagnetic waves. For mobile phone magnetic isolation absorbing materials, in the high frequency range, their working principle involves the electromagnetic parameters of the material, including complex dielectric constant and complex magnetic permeability. When electromagnetic waves are incident on the surface of a material, the microstructure inside the material will interact with the electromagnetic waves. The research team of the Advanced Institute has discovered through in-depth theoretical analysis and experimental testing that microscopic particles such as electrons and ions inside materials undergo polarization and magnetization phenomena under the action of high-frequency electromagnetic fields. These microscopic processes determine the material's ability to absorb electromagnetic waves.

2、 Optimize material composition

Advanced Institute in Research and Development Research Platinum brand mobile phone magnetic isolation sheet absorbing materialAt that time, various basic materials were screened and studied. For example, in terms of dielectric materials, materials with high dielectric constant and low loss tangent, such as certain new ceramic materials, are selected. These materials can effectively interact with electromagnetic waves in the high frequency range, improving the absorption efficiency of electromagnetic waves. Meanwhile, in the selection of magnetic materials, nanoscale magnetic particles such as ferrite nanoparticles were used. The nanoscale size endows magnetic particles with unique magnetic properties, exhibiting excellent magnetic loss characteristics at high frequencies.

In order to further improve the absorption efficiency, researchers from the Advanced Institute have attempted to add functional additives to platinum brand materials. For example, adding materials with excellent electrical properties such as carbon nanotubes. Carbon nanotubes have high conductivity and a unique tubular structure, which can form a conductive network inside the material and enhance the absorption of electromagnetic waves. By precisely controlling the type, content, and dispersion state of additives, the electromagnetic parameters of materials can be effectively adjusted to achieve better absorption effects in the high-frequency range.

3、 Improve material structure design

The Advanced Institute has proposed a design concept for multi-layer composite structures for Research Platinum brand mobile phone magnetic isolation sheet absorbing materialBy stacking materials with different electromagnetic parameters together, a multi-layer composite structure is formed. Each layer of material is optimized for absorbing electromagnetic waves within a specific frequency range. For example, the outermost layer can be designed as a material layer with high reflection loss for high-frequency electromagnetic waves, reflecting back some of the incident electromagnetic waves; The middle layer is designed as a material layer that absorbs and loses electromagnetic waves that penetrate through; The innermost layer can be designed as a material layer with good impedance matching characteristics, reducing the reflection of electromagnetic waves inside the material, improving the transmission depth of electromagnetic waves, and thereby enhancing the overall absorption effect.

Introducing microstructures within materials, such as periodic pores, gaps, or microstrip structures, is also an effective method to improve absorption efficiency. Researchers from the Advanced Institute have found through numerical simulations and experimental verification that these microstructures can generate resonance effects in the high frequency range. When the frequency of electromagnetic waves matches the resonance frequency of microstructures, it will cause strong electromagnetic response, thereby enhancing the absorption of electromagnetic waves. For example, in the research of platinum brand materials, periodic microstrip structures are designed, which generate induced currents under high-frequency electromagnetic fields. The flow of current leads to energy loss, thereby improving the absorption efficiency.

4、 Optimize the preparation process

The Advanced Institute has strictly controlled the synthesis conditions of the materials during the preparation process of platinum brand mobile phone magnetic isolation absorbing materials. For example, in the synthesis of magnetic materials, precise control of parameters such as reaction temperature, time, and reactant concentration is required. By optimizing these conditions, magnetic particles with good crystallinity and uniform particle size can be obtained, thereby improving the magnetic stability and absorption efficiency of the material. When synthesizing dielectric materials, advanced sol gel method and other preparation processes can accurately control the microstructure and chemical composition of materials.

Ensuring the uniformity and consistency of materials is crucial in the preparation process. The Advanced Institute adopts advanced mixing, dispersion, and molding technologies to ensure the uniform dispersion of functional additives in the base materials. For example, when mixing materials, a combination of high-speed stirring and ultrasonic dispersion is used to evenly distribute additives such as carbon nanotubes throughout the entire material system. Meanwhile, during the molding process, precision molds and advanced pressing techniques are used to ensure the uniformity of material thickness and dimensional accuracy, thereby improving the stability of the material's high-frequency absorption performance.

5、 Testing and Evaluation

The Advanced Institute has a comprehensive testing and evaluation system for Research Platinum brand mobile phone magnetic isolation sheet absorbing materialAccurately test the absorption efficiency in the high-frequency range. Through advanced equipment such as vector network analyzers, it is possible to accurately measure electromagnetic parameters such as reflection coefficient, transmission coefficient, and absorption coefficient of materials at different frequencies. According to the test results, researchers can adjust the composition, structure, and preparation process of materials in a timely manner to continuously improve the absorption efficiency of materials in the high-frequency range.

Through various research and improvement measures mentioned above, Advanced Institute (Shenzhen) Technology Co., Ltd. has continuously improved the absorption efficiency of the research platinum brand mobile phone magnetic isolation sheet absorbing material in the high frequency range, providing strong material support for the development of mobile communication technology and meeting the growing market demand.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.