Title :
A Note on Noise and Conversion-Gain Measurements
Author :
Breazeale, William M.
Author_Institution :
Department of Engineering, University of Virginia, Charlottesville, Virginia
Abstract :
The development of microwave receivers with a low-gain converter as the first stage has made it desirable that the noise level and the conversion gain be determined independently of the following intermediate-frequency amplifier. Often this converter is a crystal with a conversion gain less than one. This paper discusses some of the general procedures that have been used to measure microwave-converter noise levels and conversion gains.
Keywords :
Kelvin; Noise figure; Noise generators; Noise level; Noise measurement; Receivers; Receiving antennas; Senior members; Signal to noise ratio; Temperature;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1947.226195
