长径比对铁纤维涂层反射率的影响研究

The Effect of the Aspect of Iron Fiber Layer on Microwave Reflectance

基于麦克斯韦方程 ,给出了多晶铁纤维的微波磁导率和介电常数的理论公式 .利用电磁参数进而得到铁纤维涂层的反射率 ,即获得铁纤维涂层的反射率对长径比的依赖关系 .分析了铁纤维长径比对反射率的影响 .结果表明 ,必须依据反射率理论公式对铁纤维的长径比进行优化设计 ,才能得到宽频带、低反射率的铁纤维涂层 .

Based on the Maxwell Equation, theoretical formula of microwave permeability and permittivity of polycrystalline iron fibers are introduced. Applying the electro-magnetic parameters, the authors have derived the reflectance of aspect. The effects of the aspect of iron fiber on reflectance are analyzed. The analysis indicates that the aspect of iron fiber has to be optimized in accordance with the reflection formula to get lower reflectance of fiber layer under the broad frequency band.