Title :
Low-Noise Design of Microwave Transistor Amplifiers (Short Papers)
fDate :
8/1/1975 12:00:00 AM
Abstract :
Parameters are derived for circles of constant overall noise figure on the source admittance plane of a preamplifier cascaded with a noisy main amplifier. It is shown that the noise figure and noise measure of an amplifier can be expressed in terms of the scattering parameters of a lossless two-port network connected at the input of the amplifier. Examples are given which demonstrate how this network can be synthesized to meet amplifier noise specifications.
Keywords :
Admittance; Loss measurement; Low-noise amplifiers; Microwave amplifiers; Microwave transistors; Network synthesis; Noise figure; Noise measurement; Preamplifiers; Scattering parameters;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1975.1128650
