Title :
The variable-capacitance parametric amplifier
Author_Institution :
Bell Telephone Labs., Inc., Murray Hill, N. J.
fDate :
4/1/1959 12:00:00 AM
Abstract :
The physical principles involved in the operation of the major types of variable-capacitance parametric amplifiers are reviewed and a qualitative explanation is given of the variable-capacitance effect in semiconductor diodes. The utilization of these principles and also of these diodes in a number of experimental, low-noise amplifiers is described. A comparison is given of the best noise performance obtained to date with experimental vacuum-tube amplifiers with that of parametric amplifiers. This paper is directed primarily at nonspecialists who wish to acquire some familiarity with a new and fast-moving field.
Keywords :
Capacitance; Capacitors; Low-noise amplifiers; Masers; Microwave amplifiers; Microwave devices; Noise figure; Noise generators; Operational amplifiers; RLC circuits; Semiconductor device noise; Semiconductor diodes; Semiconductor optical amplifiers; Solid state circuits; Voltage;
Journal_Title :
Electron Devices, IRE Transactions on
DOI :
10.1109/T-ED.1959.14473
