Multi-level depressurization collector for traveling wave tube

Abstract

This invention belongs to a multi-level depressurization collector matched with traveling wave tube, comprising a cylindrical shell, each electrode and power source leading wire thereof mounted in the shell, an insulator mounted between each electrode and shell, an insulator rear cover provided with a power source leading hole, a front end cover. Because the original spare-parts type shell and the insulator thereof are designed to the integral cylindrical body with simple structure, the last level electrode is mounted at the central position of the inner wall of the rear cover, and the other each rear end electrodes are provided with the power source leading hole provided with an insulated sleeve for the front end electrode power source leading hole, this invention is featured with simple and compact structure, simple processing and assembling, strong suitability to the insulated material, small size, light weight and wider application range and so on, such that the defaults of complicated shapes the original spare-parts type shell and the insulator thereof has, need of mounting power source leading hole in the insulated layer, bad processing technology, difficult of assembling and bad suitability to the insulated material which are existed in the background technology are conquered.

Description

technical field [0001] The invention belongs to an electric vacuum device in microwave technology, in particular to a multi-stage step-down collector used in conjunction with a traveling wave tube. Background technique [0002] The multi-stage step-down collector is used in conjunction with the traveling wave tube, including the collector shell, the electrodes of all levels ring-shaped in the shell and the corresponding power lead-out wires, the ceramic insulator between the electrodes and the shell, and the The power cord lead-out (pipe) hole in the insulator, and the insulator rear cover located at the rear of the casing with a power cord lead-out hole. This kind of multi-stage step-down collector is to classify and collect electrons after high-frequency action according to speed, so that electrons with high kinetic energy hit low potential electrodes, and electrons with low kinetic energy hit high potential electrodes, thus When the electrons reach the corresponding elec...

AI Technical Summary

Problems solved by technology

In order to adapt to the lead-out method of this kind of electrode power line, the insulator needs to be a ceramic insulator with a certain strength, and the ceramic insulating part and the corresponding section of the shell must be made into separate parts for each pole, and then assembled into a whole when assembling, so The entire set of insulators and their shells are not only complex in shape, but also poor in processing technology, difficult to assemble, and poor in adaptability to insulating materials; at the same time, the power line lead-out tube hole needs to be set in the insulating layer, which will also increase the volume of the collector and hinder Traveling wave tubes are used in areas with volume and weight restrictions, such as space and other fields; attached Figure 4 It is a schematic diagram of the structure of the multi-stage step-down collector disclosed in "Traveling wave tube using small multi-stage step-down collector" (NASA Technical Paper, 1987)

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