TRAVELLING-WAVE TUBE Russian patent published in 2014 - IPC H01J25/00 

FIELD: electricity.

SUBSTANCE: travelling-wave tubes (TWT) based on the principle of permanent long-term interaction of the electron stream with the travelling field in a non-resonance oscillation system can be used in different communications electronics equipment. TWT contains an electron gun, a slow-wave structure that consists of the circuit of coupled resonators with sealed dielectric partitions separating the slow-wave structure from SHF links, a focusing system as a number of electric or permanent magnets and a collector. The input and output resonators of the slow-wave structure are coupled with the wave-guide ducts through slots in the end walls. Matching with SHF wave-guide ducts is carried out due to increase in size of the coupling slots at the input and output resonators, change in their diameters and selection of angle α in the wave-guide ducts between the lower edge of the coupling slots and the opposite wall of the wave-guide duct and is made by calculation or by an experiment.

EFFECT: simplifying matching with SHF wave-guide ducts.

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