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本文在准静态近似成立的情况下,利用传输线理论和损耗唯象等效法(PhenomenologicallossEquivalentMethod,简称PEM法),结合二流体模型和实验数据对高温超导微带线的传输特性进行了较全面的分析,考虑到超导薄膜膜厚的影响,分别计算了超导带条的损耗,介质损耗,接地面分别为超导薄膜和正常金属时的损耗,并着重讨论了接地面为正常金属时的各项损耗,计算结果表明在低频区域,介质损耗和接地面的损耗不能忽略,而且还是损耗的主要来源,这与普通金属微带线的特性有较大差别.从给出的相速度与频率的关系曲线可以看出超导微带传输线是无色散的.整个计算结果表明它是一种低损耗,无色散的微带传输线.
In this paper, the transmission line theory and the loss phenomenological equivalence method (PhenomenologicallEquivalent Method, PEM method for short), combined with the two-fluid model and the experimental data to carry out a more comprehensive analysis of the transmission characteristics of HTS microstrip line in the quasi-static approximation established case Considering the influence of superconducting film thickness, the loss of superconducting tapes, dielectric loss, loss of superconducting thin film and normal metal when the ground planes are respectively calculated, and the effects of The results show that in the low frequency region, dielectric loss and ground plane loss can not be ignored, but also the main source of loss, which is different from the characteristics of common metal microstrip line. From the given phase velocity and frequency curve can be seen that the superconducting microstrip transmission line is non-dispersive. The whole calculation shows that it is a low-loss, non-dispersive microstrip transmission line.