高性能高温超导线性相位滤波器的研制  

Research and development of HTSC linear-phase filter

作　　者：张天良[1] 羊恺[1] 罗正祥[1] 补世荣[1] 刘娟秀[1] 宁俊松[1] 

机构地区：[1]电子科技大学空天科学技术研究院,成都610054

出　　处：《仪器仪表学报》2007年第9期1673-1676,共4页Chinese Journal of Scientific Instrument

摘　　要：本文结合extracted-pole技术,并针对实际调试困难提出了特殊的调试方法和有效的电路结构。采用全波电磁仿真分析方法,利用在微波频段Q值比常规导体高1～3个数量级、具有极低表面电阻的YBCO高温超导薄膜,和厚度为0.5 mm、介电常数为23.5的LaAlO_3作为衬底的微带线,研制出了工作在1.75 GHz,带宽为80 MHz的高温超导线性相位滤波器,带内群时延起伏约为±1.5 ns,带内插损最好达到0.141 dB。The models of HTSC （high temperature superconductivity） resonators are built using CAD programs with full-wave field simulation method. With a special way, according to the design goal an HTSC filter is synthesized, manufactured, installed and measured. The filter is manufactured on double-sided HTSC YBCO （YBa2Cu307） film of 400 nm thickness on a LaAIO3 substrate of 0.5 mm. The filter has a bandwidth of 80 MHz ; and its center frequency is 1.75 GHz, group delay fluctuation is about -＋ 1.5 ns, and the best insertion loss is 0. 141 dB.

关 键 词：超导 线性相位 滤波器 

分 类 号：TN713.5[电子电信—电路与系统] O511.9[理学—低温物理]