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The multispeed electron beams with periodically varying diameter can be used to create a broadband amplifier and generator tubes. The experimental results showed the possibility of transition from generation to gain due to the formation a number of local droops of capacity in pulsating electron beams.
The results of theoretical and experimental study of multispeed electron beams are considered. Efficient methods for the formation of such electron beams are proposed. An overview of the using of multispeed electron beams to generate and amplify microwave signals of different complexity is provided.
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