Title :
Superconducting Tunnel Junction Noise Generator and SIS Mixers Noise Measurements
Author :
Belitsky, V.Yu ; Koshelets, V.P. ; Serpuchenko, I.L. ; Tarasov, M.A. ; Filippenko, L.V. ; Shitov, S.V.
Author_Institution :
Institute of Radioenginering and Electronics of Acad. of Sciences, Marx av., 18, Moscow, USSR, telex 411429 IRESC, fax 7-095-200-22-16 (17), telephone 203-14-33
Abstract :
In this work the output noise calibration of cryogenically cooled low noise SIS mixers, direct detectors and IF amplifiers by means of SIS noise source was studied experimentally. Applying LO power sufficient to linearize IV curve of SIS one may vary noise temperature from 4,2 to 100 K by changing bias current. Shot noise in series arrays of SIS junctions differs from noise in single junction.
Keywords :
Josephson junctions; Low-frequency noise; Noise generators; Noise level; Noise measurement; Superconducting device noise; Superconducting devices; Temperature measurement; Testing; Voltage;
Conference_Titel :
Microwave Conference, 1990. 20th European
Conference_Location :
Budapest, Hungary
DOI :
10.1109/EUMA.1990.336144
