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Slow-wave device adopting circular arc body V-shaped waving micro-strip curve

An arc-shaped and curved technology, which is applied in the field of microwave vacuum electronics, can solve the problems of unfavorable traveling wave tube focusing, difficult transmission of ribbon electron beams, etc., and achieves the effects of high interaction efficiency, small size, and expanded application range.

Inactive Publication Date: 2013-07-17
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The solution of the present invention is to use a cylindrical metal shell as the waveguide to replace the rectangular waveguide, and at the same time set an arc-shaped insulating medium layer and a "V"-shaped wavy microstrip curve in the cylindrical waveguide to make it work When using traditional cylindrical electron beams to interact with electromagnetic waves, the coupling impedance and output power of slow-wave devices can be further improved, and the operating voltage can be reduced. At the same time, it can overcome the difficulties in the generation and transmission of ribbon-shaped electron beams, which is not conducive to the focus of subsequent traveling wave tubes. and other defects, the present invention realizes its purpose of the invention with this

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  • Slow-wave device adopting circular arc body V-shaped waving micro-strip curve
  • Slow-wave device adopting circular arc body V-shaped waving micro-strip curve
  • Slow-wave device adopting circular arc body V-shaped waving micro-strip curve

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Embodiment Construction

[0013] In this embodiment, an arc-shaped "V"-shaped wave-shaped microstrip curve slow-wave device working in the 59-62GHz band is taken as an example in this embodiment: the cylindrical waveguide 1 is made of oxygen-free copper, with a length of 30.4mm, Inner radius R0.33mm, wall thickness 0.2mm; arc body "V"-shaped wavy microstrip curve 2, wherein each "V"-shaped angle (angle) in this embodiment is 13.27°, the center of the microstrip curve arc body Angle (that is, the central angle of the projection of the microstrip curve on the axial section of the waveguide) is 180°, and the microstrip curve in this embodiment adopts a rectangular line (that is, the axial section of the line body is a rectangle), and the rectangle of the section is (length × width) 0.04×0.02mm, the material is 3.5×10 in the 59-62GHz band 7 S / m oxygen-free copper, the circular arc body "V"-shaped wavy microstrip curve in this embodiment has a total of 160 cycles, that is, the overall length of the curve al...

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Abstract

The invention provides a slow-wave device adopting a circular arc body V-shaped waving micro-strip curve and belongs to the technical field of microwave vacuum electronic technologies. The slow-wave device comprises a cylindrical wave conductor, a circular arc body insulating medium substrate arranged in the cylindrical wave conductor and the circular arc body V-shaped waving micro-strip curve arranged on the arc-shaped surface of the circular arc body insulating medium substrate. Due to the fact that the slow-wave device adopts the cylindrical wave conductor, and the medium substrate arranged in the cylindrical wave conductor and the circular arc body V-shaped waving micro-strip curve are circular arc bodies, a traditional cylindrical electron beam can be adopted to act with electromagnetic wave in working, the coupling impedance and the output power of the slow-wave device are effectively improved, and the slow-wave device can work under the condition of low working voltage. Therefore, compared with the prior art, the slow-wave device has the advantages of being high in coupling impedance, output power and mutual effect efficiency, low in working voltage and small in volume, facilitating expansion of an application range and improvement of wave duct performance and the like.

Description

technical field [0001] The invention belongs to the slow-wave device used for forming traveling wave tubes and oscillators in the field of microwave vacuum electronics technology, in particular to a slow-wave device adopting a microstrip curve in a V-shaped wave shape of an arc body. Background technique [0002] Modern traveling wave tubes have become important microwave electronic devices for electronic equipment such as radar, electronic countermeasures, satellite communications, navigation, and remote sensing. The slow-wave device is the core of the TWT, and its performance directly determines the technical level of the TWT. In traveling wave tubes, the most widely used slow wave structure is the helix and its coupled cavity. The dispersion characteristics of the helix are flat and the operating frequency is wide, so it has been widely used in traveling wave tubes; however, due to the limited heat dissipation capacity of the helix, the average output power of the helix ...

Claims

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Application Information

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IPC IPC(8): H01J23/24
Inventor 魏彦玉刘鲁伟沈飞赵国庆宫玉彬王文祥
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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