Design and Performance of an Ultra-Narrowband Superconducting Filter at UHF Band
Design and Performance of an Ultra-Narrowband Superconducting Filter at UHF Band
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DOI：
10.1109/lmwc.2008.922624
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发表时间：
2008-06
影响因子：
3
通讯作者：
S. Jin;B. Wei;B. Cao;Xiaoping Zhang;Xubo Guo;Huili Peng;Y. Piao;B. Gao
中科院分区：
文献类型：
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作者：
S. Jin;B. Wei;B. Cao;Xiaoping Zhang;Xubo Guo;Huili Peng;Y. Piao;B. Gao
提出了一种适用于高温超导滤波器的阶跃阻抗螺旋谐振器，其带宽小于0.5%。研制了一个中心频率为650MHz、带宽为0.3%的八极点高温超导滤波器。测试结果表明，插入损耗小于0.3dB，回波损耗优于16dB。该滤波器在通带以下2 MHz处的带外抑制为65 dB，在通带以上2 MHz处的带外抑制为80 dB。
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.