CAJ | 학술논문

本文研究一种宽带多层水泥结构的吸波材料。通过在水泥材料中加入不同比例的石墨和铁磁粉末材料，并加工形成具有多层夹心结构的结构吸波材料。为了测量该结构吸波材料的等效电磁参数，我们进一步发展了与测量参考面无关的电磁参数测量方法，提出了一个用于参数提取的非线性方程，与原有的方程相比，该函数的数学性质更好，因而在迭代求解中会提高求解的收敛速度。其次，考虑迭代求解非线性方程过程中初值的选择问题，给出了针对该非线性方程的估计置信区域半径的公式。最后，针对该结构吸波材料进行了测量与等效电磁参数的分析计算，得到了有效介电常数和有效磁导率。
본문연구일충관대다층수니결구적흡파재료。통과재수니재료중가입불동비례적석묵화철자분말재료，병가공형성구유다층협심결구적결구흡파재료。위료측량해결구흡파재료적등효전자삼수，아문진일보발전료여측량삼고면무관적전자삼수측량방법，제출료일개용우삼수제취적비선성방정，여원유적방정상비，해함수적수학성질경호，인이재질대구해중회제고구해적수렴속도。기차，고필질대구해비선성방정과정중초치적선택문제，급출료침대해비선성방정적고계치신구역반경적공식。최후，침대해결구흡파재료진행료측량여등효전자삼수적분석계산，득도료유효개전상수화유효자도솔。
This paper discusses a broadband multilayer absorbing materials cement structure. By adding different proportions of graphite and the ferromagnetic material powder in the cement material,thus pro-cessed to form a structure absorbing material has a multilayer sandwich structure. Because of the short-comings in traditional measuring method,we further develop the electromagnetic parameter measurement method that unrelated to reference plane. First,we put forward a nonlinear equation for parameter extrac-tion which compared with the original equation and the mathematical properties of the function are better. So it can improve the convergence speed of solving in the iteration. Secondly,considering the iterative ini-tial value selection problem in the process of solving nonlinear equation ,nonlinear equations is given for the estimation of confidence region radius formula. Finally, in view of the actual cement samples were measured with electromagnetic parameter extraction calculation,the calculation results agree well with the measured results.