DocumentCode
1963719
Title
Pump Noise Coupling in Parametric Amplifiers
Author
Dean, M ; Clarke, J.
Author_Institution
Royal Radar Establishment, Great Malvern, Worcestershire, United Kingdom.
fYear
1974
fDate
10-13 Sept. 1974
Firstpage
338
Lastpage
342
Abstract
A simple theory for predicting the effects of pump noise on the performance of parametric amplifiers has been developed and verified. It is shown that AM noise on the pump injects both FM and AM noise on the signal magnified by approximately the amplifier gain. It is also shown that FM noise on the pump can yield both FM and AM noise on the amplified signal : in this case the coupling coefficient for simple amplifiers is shown to be a function of the idler bandwidth. Analytic expressions for the maximum coupling factors are quoted for the case of a simple amplifier. Experiments on two different amplifiers are described which both support the theoretical predictions.
Keywords
Additive noise; Bandwidth; Coupling circuits; Electrons; Frequency modulation; Microwave amplifiers; Noise level; Phase noise; Signal processing; Temperature;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1974. 4th European
Conference_Location
Montreux, Switzerland
Type
conf
DOI
10.1109/EUMA.1974.332068
Filename
4130709
Link To Document