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Millimeter wave band traveling wave tube output window and manufacturing method thereof

A millimeter-wave band and output window technology, which is applied in the manufacture of discharge tubes/lamps, cold cathodes, and electrode systems, can solve problems such as loose fitting structures, poor matching of vacuum airtight electrical properties, and weak welding, etc., to achieve Good effect of vacuum airtightness

Inactive Publication Date: 2010-07-07
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the output window of the traveling wave tube in the prior art is prone to problems of vacuum airtightness and poor matching of electrical properties due to loose fitting structure and weak welding

Method used

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  • Millimeter wave band traveling wave tube output window and manufacturing method thereof
  • Millimeter wave band traveling wave tube output window and manufacturing method thereof
  • Millimeter wave band traveling wave tube output window and manufacturing method thereof

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Embodiment Construction

[0022] The technical solution of the present invention is to use electromagnetic simulation software to design the structure, design the inner conductor, dielectric ceramic and outer conductor in the overall structure of the energy output window assembly, and assemble them with a fixture and weld them according to the welding process to obtain good air tightness The output window is finished, and its performance meets the requirements of the standing wave within the bandwidth of the working frequency band of the ka-band traveling wave tube (the low-frequency end of the millimeter-wave band).

[0023] refer to figure 1 , showing the structure diagram of the output window of the millimeter-wave band traveling wave tube of the present invention. In the figure, the stepped cylindrical outer conductor a placed on the outermost side is 1, and the outer conductor b connected to it is the outer conductor b. The central part of the output window is the core A rod-shaped inner conductor...

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Abstract

The invention discloses a millimeter wave band traveling wave tube output window and a manufacturing method thereof, belonging to the field of microwave vacuum electron devices. The output window comprises a core bar-shaped inner conductor and cylindrical dielectric ceramic components arranged at the periphery and connected with each other by welding, wherein the components are then welded with outermost cylindrical outer conductors. The manufacturing method is as follows: utilizing electromagnetic simulation software to carry out stimulation experiment adjustment on the output window; selecting the inner conductor, the dielectric ceramics and the outer conductors; plating nickel on the inner conductor and the outer conductors; metalizing the alumina ceramics; assembling the inner conductor, the ceramics and the outer conductors on a corresponding welding jig and carrying out welding in a hydrogen furnace according to the corresponding process specification; detecting the vacuum air tightness of the output window; and testing the standing-wave ratio of the output window, wherein the requirement that the standing-wave ratio is less than 1.5 is satisfied in the working band. The structure of the output window has good vacuum air tightness, and the output window can bear direct current power transmission of 80W and can be widely used for the millimeter wave band low-frequency spiral traveling wave tubes.

Description

technical field [0001] The invention belongs to the field of microwave electric vacuum devices, and in particular relates to an output window of a millimeter wave band traveling wave tube and a manufacturing method thereof. Background technique [0002] The output window of the traveling wave tube is a component used to transmit energy to the traveling wave tube. The structure must maintain the vacuum state in the entire traveling wave tube; in terms of electrical performance, the microwave signal should be transmitted from the transmission line outside the tube to the inside of the tube as much as possible without loss. The slow wave line (or the transmission line from the slow wave line to the outside of the tube). Whether the output window design of the traveling wave tube is good or not will directly affect the working frequency band, gain and gain flatness of the tube. In addition, in the output section of the traveling wave tube, the excessive reflected power is absorb...

Claims

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Application Information

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IPC IPC(8): H01J23/36H01J9/00
Inventor 吴华夏贺兆昌张文丙徐炜周秋俊朱刚程海王芳
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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