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A traveling wave tube multi-stage step-down collector

A collector and traveling wave tube technology, which is applied in the field of vacuum microwave electronic devices, can solve the problems of low collection efficiency, high reflux rate, and large local energy of the last stage collector, so as to improve the collection efficiency, increase the bombardment area, The effect of improving the heat dissipation effect

Active Publication Date: 2021-04-02
NO 12 RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above problems, the technical problem to be solved by the present invention is to provide a traveling wave tube multi-stage step-down collector to solve the problem that the electron beam of the existing traveling wave tube multi-stage step-down collector directly bombards the final collector for a long time, resulting in The local energy of the final collector is too large, which reduces the life and reliability of the traveling wave tube, and due to the high backflow rate, the collection efficiency is low

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  • A traveling wave tube multi-stage step-down collector
  • A traveling wave tube multi-stage step-down collector
  • A traveling wave tube multi-stage step-down collector

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Embodiment Construction

[0031] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0033] Techniques and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques and devices should be considered part of the description.

[0034] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have different values.

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Abstract

The invention discloses a traveling-wave tube multistage depressed collector which comprises an insulating porcelain barrel with an inner cavity, an inner collector and an outer collector, wherein theinner collector is accommodated and fixed in the inner cavity of the insulating porcelain barrel, and the outer collector is fixedly arranged on an outer wall of the insulating porcelain barrel; theinner collector comprises a front-stage collector and a tail-stage collector which are arranged in the axial direction of the insulating porcelain barrel; the tail-stage collector comprises a body part, and the body part at least comprises a bottom wall part; a first conical protrusion facing the injection direction of an electron beam is formed on the bottom wall part, and the first conical protrusion and the front-stage collector are coaxially arranged; the tail-stage collector further comprises a protrusion structure formed on the body part. The traveling-wave tube multistage depressed collector disclosed by the invention solves the problems that the electron beam of an existing traveling-wave tube multistage depressed collector directly bombard the tail-stage collector for a long timeto cause oversized local energy of the tail-stage collector and reduce service life and reliability of a traveling-wave tube; furthermore, the problem of low collecting efficiency caused by high backflow rate is also solved by the traveling-wave tube multistage depressed collector.

Description

technical field [0001] The invention relates to the field of vacuum microwave electronic devices. More specifically, it relates to a traveling wave tube multi-stage step-down collector. Background technique [0002] With the development of space electronic technology, spaceborne synthetic aperture radar (SAR) satellites for remote sensing have become a research hotspot. Spaceborne SAR satellites can overcome the limitations of cloud, rain, snow and dark night conditions to image ground targets. All-weather, high-resolution, large-scale ground observation can play an important role in both military and civilian fields. As the core electronic device of spaceborne SAR radar, the high-power pulsed space traveling wave tube puts forward higher requirements on power, efficiency, reliability and other performances. [0003] In the development of existing traveling wave tubes, the efficiency requirements for airborne and ground high-power pulse traveling wave tubes are not high, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/027H01J23/033
CPCH01J23/0275H01J23/033
Inventor 曹雪梅杨乐邵海丹
Owner NO 12 RES INST OF CETC
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