5．9GHz高温超导圆极化微带天线的研制  

HIGH T_c YBCO/LaAlO_3 SUPERCONDUCTING CIRCULAR POLARIZED MICROSTRIP ANTENNA

作　　者：田玉珂[1] 曹必松[1] 何艾生[1] 张雪霞[1] 

机构地区：[1]清华大学物理系,北京工业大学物理系,清华大学电子系

出　　处：《低温物理学报》1995年第6期429-434,共6页Low Temperature Physical Letters

基　　金：国家超导中心和国家航天部基础研究基金

摘　　要：本文首次报道了用ＹＢＣＯ／ＬａＡ１０３超导薄膜制成的频率为５．９ＧＨｚ，极化度为２．７ｄＢ的高温超导园极化微带天线，匹配电路与天线辐射器集成于同一块１０×１５ｍｍ２的ＹＢＣＯ／ＬａＡ１０３片子上．在７７Ｋ时与相同尺寸的圆极化银膜天线相比，超导天线传输系数增加５．５ｄＢ，辐射效率提高５．４ｄＢ，实验结果证实了用高温超材料制备圆极化微带天线的优越性．作为这种超导圆极化微带天线的应用背景，我们在本文中简单地介绍了旨在克服航天器重返大气层时的通讯中断而制定的超导磁窗－超导天线计划．Abstract YBCO/LaAlO3 superconducting circular polarized microstrip antenna with an integral superconducting feed and matching network is reported for the first time. The working frequency is 5.9 GHz and the polarity ratio was measured to be 2. 7dB. At the temperature of 77K,compared with the Ag thin film antenna with Ag thin film feed and matching network,the superconducting antenna's transmission coefficiency increased 5. 3dB and its radiation efficiency increased 5.3dB.

关 键 词：YBCO 超导薄膜 微波天线 天线 圆极化 

分 类 号：TN820.11[电子电信—信息与通信工程] TM263[一般工业技术—材料科学与工程]