一种宽带高温超导微带天线的研究  

STUDY ON A KIND OF BROADBAND HIGH-TEMPERATURE SUPERCONDUCTING MICROSTRIP ANTENNA

作　　者：刘淑芳[1] 刘少东[1] 官伯然[2] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,陕西西安710071 [2]杭州电子工业大学电子信息学院,浙江杭州310018

出　　处：《低温物理学报》2005年第4期349-354,共6页Low Temperature Physical Letters

摘　　要：为提高辐射效率和扩展工作带宽,对一种口径耦合馈电的多层介质高温超导微带天线进行了设计.设计时首先利用高温超导体低表面电阻的特性,通过在馈电网络部分引入高温超导材料的方法提高了天线的辐射效率,然后针对高温超导微带天线衬底介电常数过高,导致天线带宽过窄的问题,在天线的结构上增加了一层真空衬底,降低了天线的平均介电常数,同时,为进一步扩展天线的工作带宽,设计时在天线的馈电部分还采用了口径耦合馈电的方式.仿真结果表明了文中设计思想的可行性和有效性.To increase the radiation efficiency and broaden the operation bandwidth, an aperture-coupled microstrip antenna of high temperature superconductor with multi-layer substrates is designed. In process of the design, considering the low surface resistance property of the high temperature superconductor, high temperature superconductor material is used in the feed network, through which the radiation efficiency of the antenna is increased. Then, for the excessively high permittivity of the high temperature superconductor substrate, which leads to a too narrow bandwidth of the antenna, a vacuum substrate is introduced in the structure of the antenna to reduce the mean permittivity of substrates, Meanwhile, to broaden the operation bandwidth further, the aperture-coupled feeding technique is utilized. The simulation result shows the feasibi＇lity and validity of the idea presented in this paper.

关 键 词：宽带 辐射效率 口径耦合 高温超导 高温超导体 微带天线 馈电网络 宽带 高温超导材料 天线带宽 辐射效率 口径耦合 介电常数 

分 类 号：TN820[电子电信—信息与通信工程]