A power handling capability improved HTS filter using modified sliced line resonators

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• 作者：Tianning Zheng ; Bin Wei ; ^{weibin@mail.tsinghua.edu.cn" class="auth_mail} ; Cheng Feng ; Bisong Cao ; Xubo Guo ; Xiaoping Zhang ; Zhijun Ying
• 关键词：HTS filter ; Microstrip resonator ; Modified sliced-line resonator ; Power handling
• 刊名：Physica C
• 出版年：15 May, 2014
• 年：2014
• 卷：500
• 期：Complete
• 页码：1-3
• 全文大小：780 K

文摘

In this article, a modified sliced-line resonator for high temperature superconducting (HTS) filters with high power handling capability is proposed. The resonator consists of 18 equal length lines in parallel with 3 unequal length lines on both outsides. The maximum current density of this kind of resonator is investigated and compared with the conventional microstrip line resonator and the sliced-line resonator. The simulations show that the resonator enables an increase of 76% power handling capability compared with the sliced-line resonator. A four-pole HTS filter with a centre frequency of 3.65 GHz and a bandwidth of 0.7% was designed and fabricated based on the proposed resonator. The measurements of the filter show a power handling capability more than 10 W.