Structure and method for improving double-grating coupling

A dual grating and grating technology, applied in the field of vacuum electronics, can solve the problems of difficult coupling of return wave tubes, low power radiation, and slow development of return wave tube applications, so as to increase the injection wave interaction space, improve power radiation, and enhance coupling effect

Active Publication Date: 2018-11-23
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of difficult coupling and low power radiation of the return wave tube in the high frequency

Method used

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  • Structure and method for improving double-grating coupling
  • Structure and method for improving double-grating coupling
  • Structure and method for improving double-grating coupling

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] like figure 1 , figure 2 , image 3 and Figure 4 As shown, a structure for improving the coupling efficiency of double gratings includes a casing 1 and a plurality of grating columns 3. The casing 1 and the grating columns 3 can be made of gold, silver, copper and other materials, and a channel 5 is arranged in the casing 1. A first groove 2 is provided above, a second groove 6 is provided below the casing 1, and the opening of the first groove 2 and the opening of the second groove 6 are oppositely arranged; the first groove 2 and the second groove The grooves 6 are respectively located on the upper and lower sides of the channel 5; a plurality of the grating columns 3 are respectively arranged in the first groove 2 and the second groove 6 at intervals, and the bottom ends of the grating columns 3 are fixedly connected with the inner wall of the housing 1; Each grating column is provided with an opening 4 , the grating column 3 is perpendicular...

Example Embodiment

[0026] Example 2

[0027] A method for improving the coupling efficiency of double gratings is applied to a structure for improving the coupling efficiency of double gratings, and can also be implemented independently. An opening 4 is set on the upper part, and electron injection is emitted from the front end of the channel 5 through the electron gun. The electromagnetic wave is coupled with the surface of the grating column 3 through the channel 5 to generate injection wave interaction. Due to the multiple openings 4, two new channels are formed. The electric field coupling between the gratings enables the electron injection to interact with the grating structure more effectively, thereby effectively improving the radiation efficiency. Finally, the electron injection is output through the rear end of the channel 5 .

[0028] In order to verify the effect of the present invention, in this embodiment, under the condition of not changing other parameters, the observation point i...

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Abstract

The invention discloses a structure for improving double-grating coupling efficiency, comprising a casing (1) and a plurality of grating columns (3), wherein a channel (5) is arranged in the casing (1), a first groove (2) is arranged above the casing (1), a second groove (6) is disposed under the casing (1), and the opening of the first groove (2) and the opening of the second groove (6) are opposite to each other; the first groove (2) and the two grooves (6) are respectively located on the upper and lower sides of the channel (5); the plurality of grating columns (3) are respectively disposedin the first groove (2) and the second groove (6), and the bottom ends of the grating columns (3) are fixedly connected to the inner wall of the casing (1); each of the grating columns is provided with an opening (4), and the grating columns (3) are perpendicular to the extending direction of the channel (5). By opening at the grating structure, the invention increases the injection wave interaction space, effectively enhances the coupling between the electron beam and the grating, and improves the power radiation.

Description

technical field [0001] The invention relates to the technical field of vacuum electronics, in particular to a structure and method for improving double grating coupling. Background technique [0002] The return wave tube is an oscillator that self-excites and can generate electromagnetic wave oscillation with continuously adjustable frequency without the need for a signal. The core component in the return wave tube is the slow wave structure, and the double grating is a relatively common slow wave structure in the return wave tube. The electron beam emitted by the electron gun is coupled with the grating structure, and the injection wave interaction occurs. Because the return wave tube has the characteristics of broadband tuning, high power and high efficiency, it is suitable for applications such as radar and electronic interference, and can also be used as a driving source for other high-power microwave amplifiers. However, due to the characteristics of difficult coupling...

Claims

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Application Information

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IPC IPC(8): H01J23/24
CPCH01J23/24
Inventor 肖川红吴振华
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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