一种高温超导介质滤波器的研制  

DESIGN AND FABRICATION OF AN HTS DIELECTRIC FILTER

作　　者：周泉[1] 李宏成[1] 曹必松[1] 魏斌[1] 张晓平[1] 

机构地区：[1]清华大学物理系,北京100084

出　　处：《低温物理学报》2008年第3期213-216,共4页Low Temperature Physical Letters

基　　金：国家自然科学基金(项目编号:60471001)资助的课题~~

摘　　要：本文提出了采用单个屏蔽腔设计超导介质滤波器的方法,在腔内并列摆放多个圆柱形介质谐振器,在谐振器上下两个端面均采用一片超导薄膜作为短路面,滤波器结构紧凑,制备工艺简单.根据此方法设计并制作了一个两节超导介质滤波器,实测滤波器中心频率为18.13GHz,带宽为70MHz,带内插损小于0.4dB.测试结果与设计指标相符合,更高节数的高温超导介质滤波器正在研制中.A new HTS （High Temperature Superconductor） dielectric filter design method is introduced, in which cylinder dielectric resonators are aligned in a single copper shield cavity with two HTS thin films placed on both ends of the resonators. This kind of HTS filters has advantages of low insertion loss, compact structure and simplified manufacture process. In this paper, we fabricated a two-pole HTS dielectric filter according to this method. The filter has 18.13 GHz measured center frequency, 70 MHz bandwidth, and passband insertion loss is no more than 0.4 dB. The measured results are well consistent with the design target. Other HTS filters with more poles are in research.

关 键 词：高温超导 介质滤波器 屏蔽腔设计 薄膜 

分 类 号：TN713[电子电信—电路与系统]