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

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 ...

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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