摘要
本文报道用LaAlO_3衬底GdBa_2Cu_3O_1高温超导薄膜研制的四极平行耦合带通滤波器。在77K测试,结果为:中心频率为8.96GHz,带内插入损耗为0.54dB,带宽为500MHz。文中还讨论了设计制作高性能微带滤波器应注意的问题。
A four pole microstrip parallel-coupled bandpass filter have been fabir-cated using epitaxial GaBaCuO thin film on LaAlO3 substrate. At 77k, the passband insertion loss is 0.45dB, the bandwidth is 500MHz. And it is suggested that several problems should be considered tor designing a high performance superconducting microstrip line filter.
基金
国家超导研究和发展中心资助项目
关键词
带通滤波器
微带线
高温
超导膜
Bandpass filter
Coupled pairs of microstrip line
High Tc superconducting thin film
