Search results for "control grid"

showing 2 items of 2 documents

Optimum Design and Performance of an Electron Gun for a Ka-Band TWT

2019

This paper deals with optimum design and development of a thermionic electron gun to meet specified beam requirements within defined electric and geometric constraints for a Ka -band traveling wave tube (TWT) for space applications. The electron gun design is based on the Pierce method and carried out according to the iterative process indicated by Vaughan. The design of a periodic permanent magnet (PPM) beam focusing system for the stability of the beam is also required. A sensitivity analysis, by varying electric parameters and geometric parameters, is presented and taken into account as a fundamental role to the aim of optimizing the design of the Pierce gun. A cathode current value of 5…

010302 applied physicsBeam diameterMaterials sciencebusiness.industryTraveling-wave tubeSettore ING-INF/01 - Elettronica01 natural sciencesCathodeElectronic Optical and Magnetic Materialslaw.inventionSettore ING-IND/31 - ElettrotecnicaOpticslawcontrol grid electron gun PPM focusing system sensitivity analysis shadow grid TWTMagnet0103 physical sciencesKa bandElectrical and Electronic EngineeringbusinessBeam (structure)VoltageElectron gunIEEE Transactions on Electron Devices
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Design and analysis of filament power supply method for increasing life time of thermal emission tubes

2017

This paper has reviewed power supply methods for thermal electron tubes and proposes a method for purpose of increasing its lifetime, with reducing complexity of circuit and, improvement in power efficiency. In this work, the filament is operated with a decreased voltage level while maintaining the output anode power at the same level as required for the filament's operation at nominal voltage. The supply circuit is designed to avoid the reduction of filament voltage below a minimum level. A power converter made of thyristors and rectification diodes is designed to supply the filament voltage. Converter is carefully monitored and controlled by an algorithm embedded in a contemporary Digital…

Materials sciencebusiness.industryVacuum tubeRF power amplifierElectrical engineeringThyristorControl gridlaw.inventionProtein filamentRectifierlawbusinessElectrical efficiencyVoltage2017 IEEE International Conference on Industrial and Information Systems (ICIIS)
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