CAJ | 학술논문

为能够较好的计算混合介质等效复介电常数和复磁导率,提出了一种基于等效电路理论的阻抗模拟方法.导出了材料的电磁参数与材料容抗、感抗之间的对应关系,并建立了能够较完整、精确地刻画实际复合材料的模型.通过求解混合介质的等效阻抗,进一步反演其等效电磁参数.将计算结果与经典理论公式以及基于有限差分的数值方法进行了比较,结果都符合得很好,说明该方法可以用于计算材料的等效电磁参数.另外,引入薄膜层结构来刻画表面效应等因素,使得计算结果更加符合实验结果,弥补了经典公式在这方面的不足,同时也体现了该方法在刻画实际模型时所具有的优势.
위능구교호적계산혼합개질등효복개전상수화복자도솔,제출료일충기우등효전로이론적조항모의방법.도출료재료적전자삼수여재료용항、감항지간적대응관계,병건립료능구교완정、정학지각화실제복합재료적모형.통과구해혼합개질적등효조항,진일보반연기등효전자삼수.장계산결과여경전이론공식이급기우유한차분적수치방법진행료비교,결과도부합득흔호,설명해방법가이용우계산재료적등효전자삼수.령외,인입박막층결구래각화표면효응등인소,사득계산결과경가부합실험결과,미보료경전공식재저방면적불족,동시야체현료해방법재각화실제모형시소구유적우세.
In order to calculate the equivalent EM parameter of mixed medium, in this paper, we proposes a new method of impedance simulation based on an equivalent circuit. First, the relationship between electromagnetic parameters and capacitance, inductance of material is set up, and then the model that can describe real composite accurately is established. The equivalent EM parameter could be obtained by calculating the equivalent impedance of mixed medium. Comparing this method with the classical formulae and finite-difference numerical method, it is proved that it can be used to calculate the equivalent EM parameter of material. In addition, introducing thin films to simulate the factor such as surface effect, the result of calculation would match with experimental results perfectly. This method has more advantages than classical formulae and numerical method.