A comb-shaped slow-wave structure of multi-banded electron beam channels

Abstract

The invention discloses a comb-shaped slow-wave structure for a multi-band electron beam channel. The comb-shaped slow-wave structure for the multi-band electron beam channel comprises a rectangular wave guide wall of which the two ends are open; double rows of comb-shaped teeth are arranged on the inner walls of the upper end surface and the lower end surface of the rectangular wave guide wall in a staggered way; a plurality of insertion pieces are inserted into the rectangular wave guide wall at equal intervals; XYZ three-dimensional coordinates are established by taking the lower-left corner of the front end surface of the rectangular wave guide wall of which the two ends are open as an original point; the direction which is upwards vertical to the original point is the Z-axis; the direction which is leftwards horizontally is the Y-axis; the direction which is backwards horizontally is the X-axis; the teeth are at equal intervals and are parallel to the YZ plane; and the insertion pieces are parallel to the XZ plane. The comb-shaped slow-wave structure for the multi-band electron beam channel has a simple main structure, is easy to machine and is compatible with the modern micro electronic mechanical system (MEMS) technology; a transverse edge effect of the comb teeth can be ignored; the working frequency band is widened obviously; the beam-wave interaction efficiency is high; the working current is improved; the output power is increased; and the comb-shaped slow-wave structure is a novel slow-wave structure which extremely has application potential.

Description

technical field [0001] The invention relates to a comb-shaped slow-wave structure of multi-band electron injection channels, which belongs to the field of terahertz (THz) vacuum electronic devices. Background technique [0002] The generation of THz waves is a key link in the development of THz technology. According to the mechanism of terahertz radiation, its radiation sources can be divided into two categories: optical methods and electronic methods. In the current THz research field, the lack of high-power, low-cost, and portable room-temperature THz light source is the most important factor limiting the application of modern THz. [0003] The SP superradiation produced by periodic bunches has the characteristics of high radiation power and high spectral purity, and it is an effective way to improve the output power of THz source devices. Therefore, the acquisition method of periodic bunches has become a major research hotspot in the development of THz sourc...

AI Technical Summary

Problems solved by technology

In the current THz research field, the lack of high-power, low-cost and portable room temperature THz light source is the most important factor limiting the application of modern THz

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