一种改进的参数提取方法

为了描述双负材料的电磁特性，利用改进的基于S 参数的参数提取方法来提取该材料的电磁参数，该方法的最大特点是利用了各参数之间的内在联系来提取参数，而不是通常的利用S 参数来单独提取各个参数,从而保证了参数提取结果的一致性。基于上述参数提取方法设计了一种毫米波段SRR-Rod 结构的双负材料，并提取了它的电磁参数，为了验 证这种改进方法的可行性，提取了X 波段双负材料的电磁参数，通过和相关文献的参数提取结果的比较发现二者基本一致，从而验证了该提取参数方法的可行性。

An Improved Parameters Retrieval Method

In order to describe the electromagnetic properties of the double negative material, using improved parameterretrieval method based on S parameters to retrieve the electromagnetic parameters of this material, the most prominent feature ofthis method is to retrieve the parameters of the material is use the intrinsic link of the parameters when to retrieve, not the usual ofusing S parameters to retrieve the parameters independently, thus ensuring the consistency of the retrieval results. A millimeterwave double negative material with the SRRs and rods has been designed based on the above retrieval method, and retrieved itsparameters. To test the feasibility of this improved method, using this method to retrieve X-band parameters of double negative materials, and through the comparison with the related documents retrieval results find that they are in agreement basically, whichverifies the feasibility of this retrieval method in other bands.