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Analysis of RF-noise contribution in THz superconducting SIS mixers
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Paper Abstract

Superconductor-insulator-superconductor (SIS) mixers, with nearly quantum-limited sensitivity, have been playing an important role in Terahertz astronomy. For practical THz SIS receivers, however, the measured noise temperatures are sometimes higher than the expected value. The extra noise is mainly due to considerable RF noise contribution from the receiver components such as beam splitter, Dewar window, and infrared filter. In this paper, we mainly present the simulation and measurement results of the three components with different materials and thicknesses. Their noise contributions are also analyzed.

Paper Details

Date Published: 18 November 2019
PDF: 6 pages
Proc. SPIE 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI, 111960U (18 November 2019); doi: 10.1117/12.2537293
Show Author Affiliations
Honghu Li, Purple Mountain Observatory (China)
Key Lab. of Radio Astronomy (China)
Univ. of Science and Technology of China (China)
Li Jing, Purple Mountain Observatory (China)
Key Lab. of Radio Astronomy (China)
Liu Dong, Purple Mountain Observatory (China)
Key Lab. of Radio Astronomy (China)
Yao Ming, Purple Mountain Observatory (China)
Key Lab. of Radio Astronomy (China)
Bo-liang Liu, Purple Mountain Observatory (China)
Key Lab. of Radio Astronomy (China)
Univ. of Science and Technology of China (China)
Sheng-cai Shi, Purple Mountain Observatory (China)
Key Lab. of Radio Astronomy (China)
Wei-tao Lv, Purple Mountain Observatory (China)
Key Lab. of Radio Astronomy (China)
Bo-wen Fan, Purple Mountain Observatory (China)
Key Lab. of Radio Astronomy (China)
Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 11196:
Infrared, Millimeter-Wave, and Terahertz Technologies VI
Cunlin Zhang; Xi-Cheng Zhang; Masahiko Tani, Editor(s)

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