Title :
Performance margins and application area of SQUID amplifiers
Author :
Tarasov, M. ; Vystavkin, A ; Filippenko, L.
Author_Institution :
Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Mokhovaya str., 11, Moscow, 103907, Russia
Abstract :
A series of dc SQUID radiofrequency amplifiers in the frequency range 0.1-1.1 GHz with noise temperature 0.4-2 K has been designed, fabricated and experimentally studied. For resonant input tank circuit an analytical model of noise temperature has been developed. A new effect of the output noise increasing or decreasing with changing the sign of voltage-to-flux transfer coeff 1 cient has been observed experimentally and described analytically and numerically. Application of SQUID amplifiers as IF amplifiers in SIS, Josephson, hot-electron heterodyne detectors as well as in cellular base stations has been discussed.
Keywords :
Analytical models; Circuit noise; Detectors; Frequency; RLC circuits; Radiofrequency amplifiers; Resonance; SQUIDs; Temperature distribution; Voltage;
Conference_Titel :
Microwave Conference, 1995. 25th European
Conference_Location :
Bologna, Italy
DOI :
10.1109/EUMA.1995.337137
