一种800MHz无线通信用高温超导滤波器的研究  

RESEARCH OF AN HTS FILTER FOR 800MHz WIRELESS COMMUNICATION SYSTEM

作　　者：尹哲胜[1] 魏斌[1] 曹必松[1] 郭旭波[1] 张晓平[1] 何文俊[1] 何山[1] 郜龙马[1] 朱美红[1] 高葆新[2] 

机构地区：[1]清华大学物理系,北京100084 [2]清华大学电子工程系,北京100084

出　　处：《低温物理学报》2006年第3期272-274,共3页Low Temperature Physical Letters

基　　金：国家自然科学基金(项目编号:60071005;60171016)资助的课题~~

摘　　要：本文设计了应用于800MHz无线通信系统基站的8节和14节高温超导滤波器,中心频率在800MHz附近,相对带宽为2.1%,并在以0.51mm厚度的MgO为衬底的双面YBCO薄膜上制作了14节滤波器.测试结果表明,该滤波器具有较好的性能,在60K温度下,其带内插损小于0.3dB,带边陡峭度大于25dB/MHz,带外抑制优于70dB.In this paper, we designed 8pole and 14pole HTS （high temperature superconducting） filter for an 800MHz Wireless Communication System, the central frequency is about 800MHz, and the fractional bandwidth is about 2.1%. We fabricated the 14pole filter on an MgO substrate which is doubly coated with YBCO thin films. The filter has good performance, the insertion loss of the HTS filter is less than 0. 3dB, the steepness of the band-edges is larger than 25dB/MHz and the out-of-band rejection is better than 70dB at the temperature of 60K.

关 键 词：高温超导 滤波器 无线通信 

分 类 号：TN713[电子电信—电路与系统] TN929.5