接地面由超导体或导体构成的高温超导微带线的传输特性  

ATTENUATION AND DISPERSION OF HIGH-T_c SUPERCONDUCTING MICROSTRIP LINE WITH SUPERCONDUCTING OR METAL GROUND PLANE

作　　者：金飙兵[1] 程其恒[1] 吴培亨[1] 

机构地区：[1]南京大学信息物理系

出　　处：《低温物理学报》1994年第3期196-203,共8页Low Temperature Physical Letters

基　　金：国家超导技术研究和开发中心资助;国家自然科学基金;高等学校博士点专项科研基金

摘　　要：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．Abstract An analysis of attenuation and dispersion for high-Tcsuperconducting microstrip line with surerconductins or metallic groundplane, based on the two-fluid model, transmission line theory andphenomenological loss equivalent method (PEM),is presented in this poper. The effect of film thickness is included. We emphasized ourattenuation on the ground plane booked with conductor. The complexconductivity of superconductor was deduced from the experimental dataaccording to two-fluid model.The calculated results show thatdielectric loss and conductor loss of ground plane was dominant up to10GHz,this is significant different from all-metsllic microstrip line.Furthermore,they show the superconducting microstrip line is nearlynondispersive.

关 键 词：条带传输线 传输线 超导体 损耗 

分 类 号：TN817[电子电信—信息与通信工程]