Parameters’ Optimization of Slow-Wave System for Traveling-Wave Tube of Communications Equipment

Spiral traveling wave tube (TWT) has been widely spread in microwave range electronic equipment of different purposes. These devices are used in cases where it is needed a combination of large capacity, more and higher bandwidth, high gain, and a number of other parameters. Modern requirements for electronic equipment have led to the need for a significant increase in output helical traveling wave tube with air cooling, as well as to ensure the highest values of the parameters affecting the quality of the transmitted signal. Traveling wave tube is the electronic device of the microwave range, which uses long-term interaction of bunched flow of electrons moving in a longitudinal electric and magnetic fields, with direct harmonic signal (traveling wave), propagating along the delay system. At the heart of the TWT is a long interaction with the electron beam traveling along the retarding field retarding system of the amplified electromagnetic wave. In tubes of this type, the electromagnetic energy movement direction coincides with the electron flow. The goal of my project is to optimize the parameters of the slow-wave system for broadband traveling-wave tube of communications equipment. To solve these problems it is necessary to carry out studies of the physical processes occurring in the TWT at achievement of the maximum possible values of the parameters of efficiency, reliability and performance of linearity. Based on these studies I will clarify the relationship between basic parameters of TWT with design parameters of its components and the operating conditions parameters and determine the methods of their optimal combination implementation.