基于传输反射原理的散射参数反演材料电磁参数的新方法

An New Method of Determining Permittivity and Permeability by Scattering Coefficients Based on NRW Theory

本文在传输反射原理的基础上,介绍了一种利用散射数来求出复数形式的磁导率和介电常数的计算方法。通过建立同轴线的测试模型并将一个待测的材料放入其中,测试出其散射参数,从而将它们代入算法进行求解。在文章中通过比较几种反算电磁参数方法的结果,进行优化改进,从而得到一种新的算法。该算法可以在较宽的频带内准确地得到电磁参数并且同样适用于左手介质。

In the paper, based on NRW theory, a new method is presented for determining the complex permittivity and permeability of the linear materials by scattering coefficients. The coaxial line fixture is used to facilitate the measurement of the material＇ s scattering coefficients. With the scattering coefficients, the complex permittivity and permeability of the linear materials as a function of frequency can be determined by the method. Compared with former methods precise in the wideband. This method also can be used in , results of the improved method can be more the left-handed materials.