Microwave bandpass filters with closed loop resonators and coupled lines using YBCO thin films

被引：0
|
作者：
Ha, YS
Han, SK
Kang, KY
Lee, SS
Ahn, D
Park, YW
机构：
[1] SEOUL NATL UNIV,INST CONDENSED MATTER PHYS,SEOUL 151742,SOUTH KOREA
[2] ETRI,RES DEPT,TAEJON 305600,SOUTH KOREA
[3] SANGJI UNIV,DEPT PHYS,WONJOO 220130,SOUTH KOREA
[4] SOON CHUN HYANG UNIV,DEPT ELECT,ONYANG 336600,SOUTH KOREA
来源：
PHYSICA C | 1997年 / 282卷
关键词：
D O I：
10.1016/S0921-4534(97)01324-5
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the characteristics of a high-T-c superconducting (HTS) 4-pole bandpass filter (BPF) with center frequency of 3.9 GHz. YBa2Cu3O7-x films were grown on MgO substrate (20x20x5 mm(3)) by using a hollow cathode sputtering method. To improve the stopband characteristics and to reduce the physical size of a device pattern, we designed a new type microwave bandpasss filter consisting of closed-loop resonators and parallel coupled-lines. In resonator structure and in connections between input/output ports and resonators, the stepped impedance lines and the microstrip coupled-lines are used, respectively. The measured microwave responses of HTS 4-pole bandpass filters were in a good agreement wth the simulation result except a small shift of center frequency.
引用
收藏
页码：2523 / 2524
页数：2
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