MgB_2超导薄膜半开环结构微带滤波器设计  

Design of Semi-open-loop Structure Microstrip Filter using MgB_2 Superconducting Films

作　　者：陆安江[1] 雷涛[1] 郑迎宾[1] 

机构地区：[1]贵州大学计算机科学与信息学院,贵阳550025

出　　处：《电讯技术》2011年第2期112-115,共4页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(60666001);贵州省自然科学基金资助项目(黔科合J字[2008]2120)~~

摘　　要：采用MgB2超导薄膜材料设计了一个L频段的滤波器。该滤波器采用半开环结构微带谐振腔,产生准椭圆函数响应。滤波器带宽为61 MHz,中心频率为1.75 GHz,带内波纹小于0.1 dB,回波损耗大于18 dB。针对微带滤波器设计过程中出现的中心频率偏移、回波损耗过大等问题提出了解决方法。An L- band microstrip filter is designed using MgB2 superconducting film. Semi-open-loop microstrip resonators are utilized to realize the quasi-elliptic function response. The bandwidth of the filter is 61 MHz at 1.75 GHz center frequency, the band ripple is less than 0.1 dB and the retum loss is better than 18 dB. Methods are proposed to solve the problem that the center frequency deviates and the return loss is too high.

关 键 词：超导微带滤波器 半开环结构 MGB2超导薄膜 

分 类 号：TN713.5[电子电信—电路与系统]