Title :
Low-noise parametric amplifiers tunable over one full octave
fDate :
2/1/1972 12:00:00 AM
Abstract :
Various possible ways of tuning low noise coolable parametric amplifiers through a full octave without adjusting the pump frequency are analyzed. Based upon this analysis, a novel and simple method is proposed and practically verified. In agreement with the theory, noise temperatures between 100°K (at 4 GHz) and 240°K (at 8 GHz) were achieved in a balance C-band amplifier.
Keywords :
Noise; Parametric amplifiers; Tuning; noise; parametric amplifiers; tuning; Bandwidth; Broadband amplifiers; Circuit optimization; Diodes; Frequency; Low-noise amplifiers; Radiofrequency amplifiers; Tunable circuits and devices; Tuning; Varactors;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1972.1050235
