TRAVELING-WAVE TUBE FOR LINEAR AMPLIFIERS OF COMMUNICATION SATELLITE MICROWAVE POWER Russian patent published in 2019 - IPC H01J25/34 

FIELD: electrical engineering.

SUBSTANCE: invention relates to microwave devices, mainly traveling-wave tubes (TWT). Traveling-wave tube comprises an electron gun, a magnetic focusing system, a decelerating system with input and output of microwave energy, with a passage channel for electron flow passage and a collector-recuperator of kinetic energy of electrons. Additionally, after the decelerating system with input and output of microwave energy, with a passage channel for passage of the electron flow, in front of the collector-recuperator of kinetic energy of electrons, TWT comprises a device for conversion into kinetic energy of electrons of the electron flux of microwave energy of microwave signals in the range of operating frequencies of the device, which include the frequency of the additional signal outside the range of working frequencies allocated for the communication channel and used for linearisation of characteristics of TWT in the mode of operation with high electronic efficiency. Conversion device consists of magnetic focusing system and section of delay system with input of microwave energy and transit channel for passage of electron flow, wherein period of said section of slowing system corresponds, at its operating voltage, mode of interaction in it of electron flow and electromagnetic wave passing in direction of collector-recuperator of kinetic energy of electrons, with increase of kinetic energy of electrons of electron flow due to conversion of microwave energy of microwave signals with frequency in range of operating frequencies of device, including the frequency of the additional signal outside the range of working frequencies allocated for the communication channel and the characteristics used for linearisation TWTL in operating mode with high electronic efficiency. Recuperation of obtained additional kinetic energy of electrons of electron flow in collector-recuperator allows reducing power consumption and increasing efficiency TWTL.

EFFECT: technical result is increase in efficiency factor TWTL in operating mode with high electronic efficiency and linearity of characteristics.

1 cl, 2 dwg