MINIATURE MULTI-BEAM KLYSTRON Russian patent published in 2020 - IPC H01J25/10 

FIELD: electrical engineering.

SUBSTANCE: invention relates to miniature multi-beam klystrons used as power amplifiers of electromagnetic waves of short-wave part of centimeter and long-wave part of millimeter range of wavelengths in transmitters of radar stations, communication systems and in sources of microwave power, as well as in other radio equipment operating in pulsed or quasi-pulse modes. In miniature multi-beam klystron intended for operation in short-wave part of centimeter and long-wave part of millimeter range, containing electron gun, collector and electrodynamic system located between them, including intermediate resonators, input and output active resonators with input and output nodes of microwave energy, which include vacuum-dense dielectric microwave windows, consisting of round dielectric rods and outlet diaphragm with communication slits. At that, the miniature multibeam klystron also contains sections of input and output rectangular waveguides with passive resonators in the form of tuning pins made with possibility of changing their length, as well as tuning waveguide diaphragms, at least one of which is located between the first tuning pin, which is in close proximity to the end part of the dielectric rod, and subsequent tuning pins, adjusting waveguide diaphragms are made in form of plates bent in their middle part towards dielectric rods at angle of 45÷50 degrees, and the coupling gap, at least in the microwave energy output, is configured such that transverse dimensions of said slot are selected based on the provision for additional electromagnetic coupling between the output active resonator and the pre-output intermediate resonator.

EFFECT: broadening the amplification band of a low-voltage multi-beam broadband klystron without increasing the dimensions and weight of its input and output resonator systems while maintaining the level of output power, high reliability and quality of radio communication while maintaining thermal stability of the resonator unit.

4 cl, 6 dwg