Millimeter wave traveling wave tube composite cellpacking and preparation method thereof

A composite shell and millimeter-wave technology, applied to the shell/container of time-of-flight electronic tubes, can solve the problems of troublesome adjustment, increase the volume and weight of the tube, and the disadvantages of miniaturized millimeter-wave traveling wave tubes. Lighten and facilitate the effect of heat conduction

Inactive Publication Date: 2010-03-17
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The use of this magnetic focusing method has the following disadvantages: First, there is a gap between the pole piece and the shell, the pole piece is movable, and the adjustment during thermal measurement is troublesome, and it is difficult to ensure the consistency of the mass production of the tube
Second, because the shell has a certain thickness

Method used

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  • Millimeter wave traveling wave tube composite cellpacking and preparation method thereof
  • Millimeter wave traveling wave tube composite cellpacking and preparation method thereof
  • Millimeter wave traveling wave tube composite cellpacking and preparation method thereof

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Embodiment Construction

[0019] refer to figure 1 , figure 2 , showing the schematic diagram of the focusing structure of the centimeter-wave traveling-wave tube slow-wave system and the schematic diagram of the millimeter-wave traveling-wave tube slow-wave system. 1 in the figure is the pole piece for focusing the magnetic field. It can be seen that, in the centimeter wave band, the pole piece can go deep into the shell of the traveling wave tube, and the pole piece can be used as a part of the shell. The slow wave structure of the coupling cavity at the central axis is 2. Refer to figure 2 , image 3 , The shell 3 of the millimeter-wave traveling wave tube is a common structure shell. Since the parts inside the tube decrease with the wavelength, the pole piece 1 can only be placed outside the shell, so the inner diameter of the pole piece cannot be reduced. refer to Figure 4 , showing the schematic diagram of the composite shell and focusing structure of the millimeter-wave traveling wave tub...

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Abstract

The invention relates to a millimeter wave traveling wave tube composite cellpacking and a preparation method thereof, belonging to the field of the vacuum electronic device. The composite cellpackingcomprises pole shoes of the focusing system used for the millimeter wave traveling wave tube. The composite cellpacking is characterized in that the pole shoes and nonmagnetic metal material rings are arranged axially at intervals and are welded and fixed together to form an integrated composite cellpacking. The length of the composite cellpacking and the lateral dimension of the pole shoes are both decided by the electrical parameter of the millimeter wave traveling wave tube. By using the composite cellpacking of the millimeter wave traveling wave tube, the lateral dimension of the whole tube and the inner diameter of the pole shoes are reduced to the minimum so as to meet the demand of the dimensions parameters of the whole tube, reduce the difficulty of the focusing control and benefit the heat conduction of the slow-wave system.

Description

technical field [0001] The invention belongs to the field of vacuum electronic devices, in particular to a composite shell of a millimeter wave traveling wave tube and a manufacturing method thereof. Background technique [0002] In the power traveling wave tube of electronic warfare equipment, the magnetic focusing system mostly adopts the periodic permanent magnetic focusing system (PPM). For centimeter-band traveling wave tubes, the coupling cavity of the slow-wave system is relatively large, and the iron pole piece can be used as a part of the magnetic focusing system, and can penetrate deep into the high-frequency cavity, which can easily realize the magnetic focusing of the electron beam. Such as figure 1 shown. [0003] For the traveling wave tube in the millimeter wave band, the overall size of the coupling cavity is small, and the pole piece cannot be used as a part of the magnetic focusing system like the traveling wave tube in the centimeter wave band. For trav...

Claims

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Application Information

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IPC IPC(8): H01J23/12
Inventor 方卫侯信磊李玉珍卞磊
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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