Design and performance of an ultra-narrowband superconducting filter at UHF band

被引：13

作者：

Jin, Shichao ^{[1
]}

Wei, Bin ^{[1
]}

Cao, Bisong ^{[1
]}

Zhang, Xiaoping ^{[1
]}

Guo, Xubo ^{[1
]}

Peng, Huili ^{[1
]}

Piao, Yunlong ^{[1
]}

Gao, Baoxin ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2008年 / 18卷 / 06期

基金：

中国国家自然科学基金;

关键词：

bandpass filters (BPFs); microstrip; narrowband; superconducting;

D O I：

10.1109/LMWC.2008.922624

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 stepped impedance spiral resonator suitable for high-temperature superconducting (HTS) filter with bandwidth narrower than 0.5% is presented. An eight-pole demonstration HTS filter is developed with a central frequency of 650 MHz and a bandwidth of 0.3%. The measurements show that the insertion loss is less than 0.3 dB, and the return loss is better than 16 dB. The filter has out-of-band rejections of 65 dB at 2 MHz below the passband and 80 dB at 2 MHz above the passband, respectively.

引用

页码：395 / 397

页数：3

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