An Anomalous Peak on Intermediate Frequency Response of Superconductor-Isolator-Superconductor Mixers and Its Effect on Mixing Performance
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概要
- 論文の詳細を見る
In this paper, we mainly investigate the origin and impact of an anomalous peak observed on the intermediate frequency (IF) response of some 600 GHz Nb superconductor-isolator-superconductor (SIS) mixers. The dependences of the IF peak on temperature and magnetic field are studied to verify its Josephson-junction-like behavior. The cross sections of two SIS junction samples are analyzed by transmission electron microscopy to locate this parasitic Josephson weak link. Five different junction samples are measured to determine the impact of the Josephson weak link on the mixer performance. Finally, an equivalent circuit model is proposed to explain its behavior.
- 2004-05-01
著者
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Shi Shengcai
Purple Mountain Observatory National Astronomical Observatories Of China
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Shan Wenlei
Nobeyama Radio Observatory National Astronomical Observatory Of Japan
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IRIMAJIRI Yoshihisa
Communications Research Laboratory
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Wang Mingjye
Institute Of Astronomy And Astrophysics Academia Sinica
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Noguchi Takeshi
Nobeyama Radio Observatory National Astronomical Observatory Of Japan
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Noguchi Takeshi
Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Nobeyama, Nagano 384-1305, Japan
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Shi Shengcai
Purple Mountain Observatory, National Astronomical Observatories of China, Nanjing 210008, China
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Shan Wenlei
Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Nobeyama, Nagano 384-1305, Japan
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Irimajiri Yoshihisa
Communications Research Laboratory, Koganei, Tokyo 184-8795, Japan
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Wang Mingjye
Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 106, Taiwan
関連論文
- A 385-500GHz Low Noise Superconductor-Insulator-Superconductor Mixer for ALMA Band 8( Superconducting High-frequency Devices)
- An Anomalous Peak on Intermediate Frequency Response of Superconductor-Isolator-Superconductor Mixers and Its Effect on Mixing Performance
- An Anomalous Peak on Intermediate Frequency Response of Superconductor-Isolator-Superconductor Mixers and Its Effect on Mixing Performance