Title :
Unidirectional Paramagnetic Amplifier Design
Author :
Strandberg, M.W.P.
Author_Institution :
Res. Lab. of Electronics, Mass. Inst. Tech., Cambridge, Mass.
fDate :
7/1/1960 12:00:00 AM
Abstract :
The radio-frequency parameters and the quantummechanical parameters entering into the design of paramagnetic quantum-mechanical amplifiers are described and discussed. The physical and electrical limitations on such parameters as gain-bandwidth product, gain stability, and nonreciprocity are described analytically and with design curves. Two realizations of nonreciprocal amplifiers are described and discussed. In particular, operation of a nonreciprocal amplifier at 9 kmc is described. Explanations for the observed properties of previously reported amplifiers are given, and the steps necessary to achieve high gain-bandwidth product and nonreciprocity with paramagnetic amplifiers are described.
Keywords :
Concrete; L-band; Low-noise amplifiers; Noise figure; Operational amplifiers; Paramagnetic materials; Radio frequency; Radiofrequency amplifiers; Solid state circuits; Stability analysis;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1960.287655