一款C波段极窄带高温超导滤波器  

A C-band ultra-narrow high-temperature superconducting filter

作　　者：李超[1] 于涛[1] 王佳[1] 边勇波[1] 何晓锋[1] 周曙煜[1] 李娜[1] 吴云[1] 李春光[1] 黎红[1] 张雪强[1] 张强[1] 李国强[1] 王旭[1] 何豫生[1] 

机构地区：[1]中国科学院物理研究所,北京100190

出　　处：《低温与超导》2010年第11期28-31,共4页Cryogenics and Superconductivity

摘　　要：设计了一款中心频率位于C波段的10阶高温超导滤波器,相对带宽达到0.1%。该滤波器的拓扑结构采用准椭圆函数型,引入了2组CQ结构,分别来改善了滤波器的带边陡度和群时延平坦度,较好解决了寄生耦合对极窄带滤波器的影响。测试结果和仿真结果基本吻合,达到了预期目标。A 10-pole HTS（High temperature superconductor）filter at C-band with 0.1% bandwidth was designed in this paper.The filter introduced two CQ（Cascaded Quadruplet）cross-coupling structure to improve the passband selectivity and group delay performance.The spurious coupling problem of the ultra-narrowband bandpass filter was solved.The measured results show good agreement with the simulation.

关 键 词：高温超导滤波器 极窄带 群时延 寄生耦合 

分 类 号：TN713[电子电信—电路与系统]