本文研究设计了实用于GSM1800移动通信基站的接收机用20级高温超导滤波器,其中心频率为1750MHz,带宽78MHz.实验结果显示在低温60K时,超导滤波器的带内插入损耗小于0.35dB,带边陡度好于18dB/MHz,中心频率及带宽都和设计结果很好的吻合,验证了分析方法和制备工艺的准确可靠.为研制更高水平的超导滤波器打下了较好的基础.
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