复合介质吸波材料等效电磁参数理论计算方法的评价

The Evaluation for the Theory Calculation Methods of Composite Medium Absorbing Material Equivalent Electromagnetic Parameters

总结了复合介质吸波材料等效电磁参数的理论计算方法,并通过讨论由羰基铁、铁氧体等磁性吸波剂与黏合剂复合构成的微波吸收材料的介电系数和磁导系数与吸波剂体积分数的关系,评价了几个等效电磁参数的理论计算方法适用条件。计算结果和试验结果的对比表明:理论方法对于不同的吸波剂及其含量存在局限性,提出了根据理论方法的适用条件在计算复介电系数和复磁导系数时应该分别选择合理的理论方法予以模拟。

This paper summarizes the theoretical calculation method of equivalent electromagnetic parameters of the composite medium absorbing materials,which contains absorbing agent and adhesive,and evaluates the applicable condition of theoretical calculation method through the discussion of the relationship between composite microwave absorbing material's permittivity and permeability and the volume ratio of absorbing agent,such as carbonyl iron,ferrite magnetic. By comparing the calculated results and experimental results,it attests the limitations of the kind and content of absorbent in the theoretical methods,and proposes a mode,that according to the theories and methods of application condition in the calculation of complex permittivity and complex magnetic conductivity coefficient should respectively choose reasonable theory method to simulation in the future.