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The Traveling-Wave Tube as Amplifier at Microwaves

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1 Author(s)
Kompfner, R. ; Clarendon Laboratory, Oxford, England

A tube is described which is based on the principle of interaction between a traveling electric field and an electron beam traveling at about the same velocity. Experiments on the interaction and the construction of a tube run as a sensitive amplifier at a wavelength of 9.1 centimeters are given. A noise factor of 11 decibels with a power amplification of 14 were obtained with one particular tube. An investigation of the field obtaining in a helix-the structure used for slowing down the wave-is briefly described, and the main results of an approximate theory of the tube are given.

Published in:

Proceedings of the IRE  (Volume:35 ,  Issue: 2 )