DocumentCode
2080944
Title
Design and Performance of Cryogenically-Coolable Ultra Low Noise, L-Band Amplifier
Author
Gallego, J.D. ; Pospieszalski, M.W.
Author_Institution
Centro Astronomico de Yebes, Apartado de Correos 148, 19080 Guadalajara, Spain.
Volume
2
fYear
1990
fDate
9-13 Sept. 1990
Firstpage
1755
Lastpage
1760
Abstract
The design, realization and measurement of an ultra low-noise, cryogenically-coolable, L-band amplifier for radio astronomy applications are described. The amplifier exhibits 3 K (0.045 dB N.F.) average noise temperature over 600 MHz. bandwith with 36 dB of gain at ambient temperature of 12.5 K and 2 K average noise at physical temperature of 4.2 K. Excellent agreement between measured and predicted results verifies the validity of a recent published wideband model of a FET for L-band frequencies.
Keywords
Broadband amplifiers; Extraterrestrial measurements; Frequency measurement; Gain measurement; L-band; Low-noise amplifiers; Noise measurement; Predictive models; Radio astronomy; Temperature;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1990. 20th European
Conference_Location
Budapest, Hungary
Type
conf
DOI
10.1109/EUMA.1990.336325
Filename
4136262
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