Title :
Noise figure measurement of high temperature superconducting bi-crystal josephson junction THz mixers
Author :
An, D.Y. ; Xu, W.W. ; Hua, T. ; Li, D.C. ; Yu, M. ; Chen, J. ; Wu, P.H.
Author_Institution :
Sch. of Electron. Sci. & Eng., Univ. of Nanjing Res. Inst. of Supercond. Electron., Nanjing, China
Abstract :
Using the Y-factor measurement method, we estimated the noise figure (NF) of the high temperature superconducting bi-crystal Josephson junction mixer. The experiment was based on small pulse tube refrigerator, working at 60 K. We tested and analysed the dependence of bias voltage and local oscillation signal power with the noise figure.
Keywords :
Josephson effect; barium compounds; high-temperature superconductors; magnesium compounds; noise measurement; oscillations; superconducting mixers; yttrium compounds; V-factor measurement method; YBCO-MgO; bias voltage; high temperature superconducting bicrystal Josephson junction terahertz mixers; local oscillation signal power; noise figure measurement; pulse tube refrigerator; temperature 60 K; Harmonic analysis; High temperature superconductors; Josephson junctions; Junctions; Mixers; Noise measurement; Temperature measurement;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380129
