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Erschienen in:
1963 | OriginalPaper | Buchkapitel
Minimum noise temperature of transverse-wave D.C. -pumped electron-beam amplifiers
verfasst von : T. Wessel-Berg, K. Bløftekjaer
Erschienen in: Microwaves
Verlag: Macmillan Education UK
Enthalten in: Professional Book Archive
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The low noise temperature of the cyclotron wave amplifier, often referred to as the Adler tube [l], is achieved by means of parametric amplification of the fast cyclotron wave which can be cooled prior to the amplification. This is done in the input coupler which serves the double purpose of stripping the positive noise power associated with the fast cyclotron wave off the beam and that of coupling the signal on to the beam.