Electronic gun of traveling-wave tube

A technology of electron gun and traveling wave tube, which is applied in the field of microwave communication, can solve the problems of long start-up time of traveling wave tube and cannot meet the requirements of rapid response capability of communication system, etc., achieve size and material optimization, improve heating efficiency, and ensure heating Effect

Active Publication Date: 2014-08-20
CHENGDU GUOGUANG ELECTRIC
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Problems solved by technology

However, the start-up time of the cathode of the above-mentioned electron gun is generally not less than 3 minutes, resulting in a lon

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  • Electronic gun of traveling-wave tube
  • Electronic gun of traveling-wave tube
  • Electronic gun of traveling-wave tube

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Embodiment Construction

[0013] The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

[0014] Considering that the electron gun is the heart of the TWT, its start-up time directly determines the start-up time of the TWT. However, the cathode start-up time of the electron gun in the related art is generally not less than 3 minutes, resulting in a longer start-up time of the traveling wave tube, which cannot meet the needs of practical applications. Based on this, an embodiment of the present invention provides an electron gun of a traveling wave tube, see Figure 1 to Figure 3 ,in, figure 1 Shown is a schematic structural diagram of an electron gun of a traveling wave tube (for example: traveling wave tubes in S and C bands), the electron gun includes 5 parts, namely: cathode 1, cathode support assembly 2 supporting cathode 1, and components inside the electron gun Gun housing assembly 3, control electrode 4 an...

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Abstract

The invention provides an electronic gun of a traveling-wave tube. The electronic gun comprises a cathode, a cathode supporting component, a gun shell component, a control electrode and an anode. The diameter length of the cathode is 1 mm to 10 mm, the height of the cathode is 1 mm to 10 mm, and the weight of the cathode is 0.02 g to 2 g. The cathode is composed of a cathode head and a heating component, and the cathode head is made from a barium and tungsten material with the diameter being 1 mm to 10 mm, the height being 1 mm to 5 mm and the weight being 0.01 g to 1 g. The heating component is composed of a heater, a cathode cylinder and insulation media. The heater is formed by winding a tungsten filament or a tungsten-rhenium filament or a high-rhenium filament with the diameter being 0.01 nn to 1 mm, the cathode cylinder is made from a molybdenum and/or tungsten material with the thickness being 0.02 mm to 0.2 mm, the position between the heater and the cathode cylinder is filled with the insulation media which are formed by burning alumina powder, and the control electrode and the anode are electronic optical focus components of the electronic gun. The electronic gun improves heating efficiency of the cathode.

Description

technical field [0001] The invention relates to the field of microwave communication, in particular to an electron gun of a traveling wave tube. Background technique [0002] Traveling wave tube is an important electronic device in the fields of microwave relay communication, radar, electronic countermeasures and satellite communication. For traditional traveling wave tubes, especially those in the L, S, and C bands, the cathode size of the electron gun is generally large, and the cathode of the electron gun needs to work at a high temperature of about 1100 ° C. When the cathode is heated to work normally, the heat capacity is relatively small. Mostly, it takes a certain amount of time for the cathode heating element to heat the cathode from normal temperature to the working temperature, so the starting time of the cathode is generally not less than 3 minutes, that is, the starting time of the traveling wave tube. In modern fast-paced production and life, time is competitiv...

Claims

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Application Information

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IPC IPC(8): H01J23/06
Inventor 王曙光邱葆荣陈涛陈燕刘冬梅胡大荣
Owner CHENGDU GUOGUANG ELECTRIC
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