A high-temperature superconducting bandpass filter with microstrip quarter-wavelength spiral resonators

被引：38
|
作者：
Zhang, GY [1 ]
Lancaster, MJ [1 ]
Huang, F [1 ]
机构：
[1] Univ Birmingham, Dept Elect & Elect & Comp Engn, Birmingham B15 2TT, W Midlands, England
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2006年 / 54卷 / 02期
基金：
英国工程与自然科学研究理事会;
关键词：
bandpass filter; combline; microstrip; quarter-wavelength; quasi-elliptic; spiral; superconducting;
D O I：
10.1109/TMTT.2005.862711
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A high-temperature superconducting bandpass filter at 408 MHz using microstrip quarter-wavelength spiral resonators is demonstrated. The quarter-wavelength spiral resonators were shorted to ground, as in a combline filter, via a grounding strip that is attached to the box wall by a number of aluminum bonding wires. The introduction of the normal metal wires does not introduce a measurable attenuation. The filter achieves a symmetrical quasi-elliptic characteristic by using two cross-coupling links. The experimental results of the filter are in very good agreement with the simulated ones.
引用
收藏
页码：559 / 563
页数：5
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