Title :
Ultra-Low-Noise 1.2- to 1.7-GHz Cooled GaAsFET Amplifiers
Author :
Weinreb, Sander ; Fenstermacher, Dan L. ; Harris, Ronald W.
Abstract :
A 3-stage GaAsFET amplifier operating at 13 K, utilizing source inductance feedback is described. The amplifier has a noise temperature of <10 K, input return loss >15 dB over the 1.2- to 1.7-GHz frequency range.
Keywords :
Feedback; Frequency; Impedance; Inductance; Noise figure; Noise reduction; Radio astronomy; Radiofrequency amplifiers; Receiving antennas; Temperature distribution;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1982.1131159
