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1. A Superconducting Wide-Band Filter Subsystem with Improved Out-of-Band Performance | |||
Chen Wei,Chen Yidong,Guo Xubo,Cao Bisong,Zhang Xiaoping,Wei Bin,Jiang Linan | |||
Electrics, Communication and Autocontrol Technology 02 February 2012 | |||
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Abstract:A High-temperature superconducting (HTS) wide-band filter subsystem, consisting of an HTS filter and a cryogenic low noise amplifier (CLNA), is presented. The HTS filter at 480 MHz with an 86 MHz bandwidth is designed using stepped impedance resonators to achieve a high out-of-band performance and a compact size. The deterioration of the out-of-band rejection after cascading the HTS filter with the CLNA is addressed and solved. The measurements of the filter subsystem, without any tuning, exhibit an excellent performance. The gain is 16.3 ± 0.2 dB, the noise figure is less than 0.35 dB, and the return loss is better than 15.6 dB. The out-of-band rejection is over 78 dB up to 1230 MHz, which is 2.6 times of the filter's center frequency. | |||
TO cite this article:Chen Wei,Chen Yidong,Guo Xubo, et al. A Superconducting Wide-Band Filter Subsystem with Improved Out-of-Band Performance[OL].[ 2 February 2012] http://en.paper.edu.cn/en_releasepaper/content/4464866 |
2. Simulation Research of DC SQUID Composed of Josephson Junctions and Intrinsic Josephson Junction Arrays | |||
Zhou Tiege,Hu Yating | |||
Electrics, Communication and Autocontrol Technology 21 January 2009 | |||
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Abstract:The model of dc SQUID is constructed in the software PSpice. Taking advantage of the new model, we simulated the I-V characteristics and V-Φ characteristics of dc SQUID with different parameters. On this basis, we simulated the SQUID composed of intrinsic Josephson junction arrays by changing circuit parameters. Important results are obtained, which is valuable for understanding of the principles of dc SQUID and selection of parameters. | |||
TO cite this article:Zhou Tiege,Hu Yating. Simulation Research of DC SQUID Composed of Josephson Junctions and Intrinsic Josephson Junction Arrays[OL].[21 January 2009] http://en.paper.edu.cn/en_releasepaper/content/28130 |
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