Calculation of equivalent electromagnetic parameters of composite absorbing materials: exploration and breakthrough

introduction:

In the era of rapidly developing electromagnetic technology, compositeAbsorberWith its unique electromagnetic absorption performance, it plays a crucial role in military stealth, electromagnetic shielding, communication and other fields. The performance of composite absorbing materials largely depends on the accurate calculation of their equivalent electromagnetic parameters. In recent years, scholars at home and abroad have continuously deepened their research on the calculation of equivalent electromagnetic parameters of composite absorbing materials, and have made a series of important progress.

1、 Theoretical basis for calculating equivalent electromagnetic parameters of composite absorbing materials

The calculation of equivalent electromagnetic parameters for composite absorbing materials involves multiple disciplines such as electromagnetics, materials science, and physics. Among them, Maxwell Garnett theory and Bruggeman theory are the two most classic and widely used computational models. These two theories are based on the effective medium approximation of mixed media, and by solving the propagation characteristics of electromagnetic fields in composite materials, their equivalent electromagnetic parameters can be obtained. However, due to the diversity and complexity of composite materials, these classic theories often have certain limitations in practical applications.

2、 Exploration of a new method for calculating equivalent electromagnetic parameters of composite absorbing materials

In response to the limitations of classical theories, scholars have been continuously exploring new computational methods and models in recent years. Among them, the T-matrix method is a representative new method. This method constructs an equivalent circuit model of composite materials and combines electromagnetic field theory and numerical calculation methods to achieve accurate calculation of equivalent electromagnetic parameters of composite materials. In addition, with the continuous development of computer technology, computational models based on numerical methods such as finite element method and boundary element method are gradually being applied to the calculation of equivalent electromagnetic parameters of composite absorbing materials.

3、 Experimental study on equivalent electromagnetic parameter calculation of composite absorbing materials

Theoretical research provides important theoretical basis and guidance for the calculation of equivalent electromagnetic parameters of composite absorbing materials, but experimental verification is also indispensable. By preparing composite absorbing material samples with different components and measuring their electromagnetic properties at different frequencies, the accuracy and reliability of the computational model can be verified. Meanwhile, experimental research can also provide valuable experimental data and experience for the improvement and optimization of theoretical models.

4、 Application prospects of equivalent electromagnetic parameter calculation for composite absorbing materials

With the widespread application of composite absorbing materials in military, civilian and other fields, the study of their equivalent electromagnetic parameter calculation has significant application value. By accurately calculating the equivalent electromagnetic parameters of composite absorbing materials, strong support can be provided for their applications in stealth technology, electromagnetic shielding, communication equipment, and other fields. Meanwhile, withNew composite absorbing materialsWith the continuous emergence and development of electromagnetic technology, the research on the calculation of equivalent electromagnetic parameters of composite absorbing materials will also face more challenges and opportunities.

conclusion

The study of equivalent electromagnetic parameter calculation of composite absorbing materials is a comprehensive interdisciplinary work. By continuously exploring new calculation methods and models, combined with experimental verification and practical applications, we can provide strong theoretical support and practical guidance for the optimization design and performance improvement of composite absorbing materials. In the future, with the continuous advancement of technology and the expansion of application fields, research on the calculation of equivalent electromagnetic parameters of composite absorbing materials will continue to deepen, making greater contributions to the widespread application of electromagnetic technology and the development of military stealth technology.