Study And Application Of Magnetic Properties Of Artificial Electromagnetic Structure Materials

Artificial electromagnetic structure material by changing the size and structure of the material so that it has a special material does not have the special nature-electromagnetic parameters can be man-made regulation.The special nature of the artificial electromagnetic structure material can work well in different frequency bands,so that it has a wide range of applications,such as: perfect lens,stealth device,polarization conversion method and polarization converter and so on.In recent years,the use of non-magnetic materials to design and preparation of magnetic artificial electromagnetic structure materials,has attracted increasing attention.In this paper,we focus on two types of artificial electromagnetic structure of the magnetic properties of the study and possible applications.The research contents and results of this paper can be summarized as follows:1.This paper first discusses the nature and characteristics of the permeability of artificial electromagnetic structural materials constructed by coil arrays.According to Lenz’s law,this structure can have a magnetic resistance,can be used to prepare low-permeability artificial electromagnetic structure materials.First,with the numerical simulation of HFSS,it is concluded that when the density of the coil is larger and the size of the coil is smaller,the inversion of the S parameter can be obtained,and the magnetic permeability tends to zero,and the vector network analyzer Different density,different size of the coil structure of the electromagnetic parameters of the measurement.According to the data comparison,it can see that the numerical simulation and experimental data is consistent with the results.Therefore,through the numerical simulation and experiment can be found in the wider band with a small loss of permeability tends to zero artificial electromagnetic structure material.2.The electromagnetic properties of the linear metal particle composites were studied.Studies have shown that linear metal particles in the complex will constitute a variety of circuits,and produce a strong magnetic response,the magnetic response by the temperature is small.Based on the theory of effective medium,the composite microwave absorbing material with better performance is designed for high temperature environment.