斜入射时网格法在吸波材料吸波机理研究中的应用

通过平面波反射系数公式和传输线理论,给出了电磁波斜入射时单层吸波材料反射系数公式,利用网格法对材料的电磁参数、厚度、频率与总后向反射率的关系,进行了分组讨论与匹配设计,指出低频段材料的外形设计应该根据不同频率点的强吸收特点采取厚度渐变式.

Application of the Mesh Method on the Mechanism of Absorbing Materials at the Oblique Incidence

Using the plane wave reflection coefficient formula and transmission line theory of electromagnetic wave,the single layer absorbing material reflection coefficient formula of electromagnetic parameters were given when electromagnetic wave is the oblique incidence. At the meanwhile,the group discussion and matching design with the grid method were carried out to discuss the relationship among the material,thickness,frequency and the reflectivity.The result of research shows that,for the appearance design of low-frequency materials,the thickness gradient design should be adopted according to the strong absorption characteristics at different frequency points.