SECTIONALIZED SLOW-WAVE STRUCTURE OF TRAVELING-WAVE TUBE Russian patent published in 2007 - IPC H01J25/34 

FIELD: electronic engineering; traveling-wave tubes running continuously and in pulsed mode in very-high-frequency band.

SUBSTANCE: proposed sectionalized slow-wave structure that can be used in O-type electronic devices and traveling-wave tubes has regular electron-beam generating section, one or more regular amplifying sections, and microwave energy absorbing section. Diaphragms and rings form resonator. Material chosen for diaphragms and rings is characterized in low electrical resistance. Transit-time channel and coupling slits are provided in diaphragms. Microwave energy absorbing section has two rings whose outer diameter equals diameter of regular-section rings and disk that shorts out microwave field incorporating transit-time duct, as well as regular sections. Disk has transit-time duct and no coupling slits. Both sides of disk bear circular projections of material shorting out microwave field; soldered to two ends of disk are circular ceramic absorbers. All above-mentioned absorbing-section components form two toroidal resonators.

EFFECT: midget size making it possible to attain desired absorption level and absorber matching with regular part of slow-wave structure; facilitated manufacture, reduced size and mass.

5 cl, 1 dwg