Title :
A Low-Noise Microwave Quadrupole Amplifier
Author_Institution :
Bell Telephone Labs., Inc., Murray Hill, N.J.
fDate :
6/1/1961 12:00:00 AM
Abstract :
Experimental results on a low-noise microwave amplifier operating at 4137 Mc are described. At a gain of 19 db the measured double-channel noise figure is 0.79 db, corresponding to an effective temperature of 58°K ± 10°K. The effective beam temperature is 25°K ± 10°K. The noise bandwidth between points 3 db down from the optimum is 32 Mc. The tube operates at 10 volts and 27 ¿a and requires about 150 mw of pump power. The dynamic range of the amplifier is about 100 db.
Keywords :
Bridges; Cathodes; Cyclotrons; Electron beams; Laser excitation; Low-noise amplifiers; Microwave amplifiers; Microwave frequencies; Noise figure; Temperature;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1961.287882
