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MgB2超导薄膜半开环结构微带滤波器设计
陆安江,雷涛,郑迎宾
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(贵州大学计算机科学与信息学院,贵阳 550025)

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61MHz，中心频率为1.75 GHz，带内波纹小于0.1dB,回波损耗大于18dB。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。

关键词: 超导微带滤波器半开环结构 MgB2超导薄膜

DOI：

基金项目:

Design of semi-open-loop structure microstrip filter using MgB2 superconducting films

LU An-jiang,LEI Tao,ZHENG Ying-bin

(College of Computer Science & Information, Guizhou University，Guiyang 550025, China)

Abstract:

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 G Hz center frequency,the band ripple is less than 0.1 dB and the return los s is better than 18 dB.Methods are proposed to solve the problem that the ce nter frequency deviate s and the return loss is too high.

Key words: superconducting microstrip filter semi open loop str ucture MgB2superconducting film