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Non-axisymmetrical double-inclined-plane multistage depressed collector electrode

A non-axisymmetric collector technology, which is applied in the field of multi-stage step-down collector electrodes, can solve the problems of large space charge effect, lower collector efficiency, and low recovery efficiency, so as to suppress secondary electron backflow and improve collector efficiency. The effect of efficiency and convenient processing

Active Publication Date: 2014-11-19
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

The existence of secondary electrons has a direct impact on the efficiency of the multi-stage step-down collector and the electron return rate. The energy gained by the secondary electrons in the process of hitting the high potential electrode will reduce the efficiency of the collector.
[0006] For traveling wave tubes with low conductivity, the use of the above-mentioned double-slope collector electrode can obtain higher recovery efficiency and lower return rate, but for traveling wave tubes with high conductivity, the electrons entering the collector Due to the large space charge effect, the electron beam quickly spreads out and is collected by the electrode with a higher potential, and the recovery efficiency is low

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints. The directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the...

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Abstract

The invention provides a non-axisymmetrical double-inclined-plane multistage depressed collector electrode. In the multistage depressed collector electrode, the inner surfaces of multiple electrodes each comprise a ripple structure composed of a positive inclined plane and a negative inclined plane, the directions of electron inlets of other electrodes apart from a first electrode and a final electrode are each provided with an eccentric hole, and the eccentric holes are deflected to the same direction relative to the electron inlet of the first electrode. Compared to a conventional collector structure, the non-axisymmetrical double-inclined-plane multistage depressed collector electrode has the advantages of being capable of inhibiting secondary electron backflow, improving the collector efficiency and reducing the backflow rate.

Description

technical field [0001] The invention relates to the technical field of vacuum electronics in the electronics industry, in particular to a non-axisymmetric double-slope multi-stage step-down collector electrode. Background technique [0002] Space traveling wave tubes are widely used in communication satellites, reconnaissance satellites, navigation satellites, resource satellites, meteorological satellites, ocean satellites and other final power amplifier core components. There are varying numbers and types of space traveling wave tube amplifiers on almost every satellite. The energy on the satellite mainly comes from solar cells, so it is very limited, and 80%-90% of the energy is used in the traveling wave tube amplifier. Therefore, the space traveling wave tube must have the highest possible efficiency in order to save energy on the planet. [0003] TWT efficiency mainly depends on electron efficiency and collector recovery efficiency. After the electron efficiency rea...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J23/027
Inventor 易红霞肖刘陈之亮袁广江王莉李延威尚新文曹林林
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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