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Trapezoid-like staggered double-gate slow wave structure

A technology of slow-wave structure and trapezoidal grid, which is applied in the direction of the circuit components of the time-of-flight tube, can solve the problems affecting the power of the traveling wave tube, the gain efficiency, the reduction of axial coupling impedance, and the low efficiency of injection wave interaction.

Active Publication Date: 2021-07-13
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
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AI Technical Summary

Problems solved by technology

In the short millimeter and terahertz bands, the axial coupling impedance of the existing folded waveguide is reduced, which means that the injection-wave interaction efficiency is not high, which affects the performance improvement of the traveling wave tube power and gain efficiency to a certain extent.

Method used

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  • Trapezoid-like staggered double-gate slow wave structure
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  • Trapezoid-like staggered double-gate slow wave structure

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Embodiment Construction

[0022] The specific embodiments of the present invention are described below with reference to the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that, in the following description, detailed descriptions of known functions and designs will be omitted when they may dilute the main content of the present invention.

[0023] In this embodiment, as figure 2 , 3 As shown, the slow-wave structure of the trapezoid-like staggered double grating of the present invention includes a rectangular metal tube 1 and a trapezoidal-like staggered double grating 2, wherein the broad side of the rectangular metal tube 1 is a.

[0024] Trapezoid-like staggered double grids 2 include a plurality of trapezoidal-like grids 201 (constituting the upper row of trapezoidal-like grids) placed on the upper wall of the rectangular metal tube 1 with an upper row of intervals p in the longitudinal direction (transmission direction), an...

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Abstract

The present invention discloses a trapezoid-like staggered double-gate slow wave structure. On the basis of the staggered double-gate slow-wave structure, a trapezoidal gate is adopted at the bottom, a rectangular gate is adopted in the middle, and a circular electron beam channel is formed in the rectangular gate; the trapezoidal gate and the rectangular gate form trapezoidal-like gates, and the trapezoidal-like gates are sequentially arranged in a staggered mode in a longitudinal direction, namely a transmission direction. Tests show that the dispersion characteristic of the trapezoid-like staggered double-gate slow wave structure is improved, the broadband is wider, the high-frequency loss is greatly reduced; and meanwhile, the coupling impedance value is higher because the axial field components of the electron beam channel are more concentrated, which means that the interaction capability of an electron beam and an electromagnetic wave is increased, and further the output power, the gain and the interaction efficiency of a traveling wave tube are improved.

Description

technical field [0001] The invention belongs to the technical field of vacuum electronics, and more particularly relates to a trapezoidal-like staggered double-gate slow-wave structure suitable for vacuum electronic devices in the millimeter wave and terahertz bands. Background technique [0002] Terahertz waves are electromagnetic waves with frequencies between microwave and infrared bands, which are used in broadband communications, electromagnetic interference, public safety detection, astronomical observations, high-speed data transmission, high-precision non-destructive detection, plasma diagnosis, biomedical imaging, and many other applications. Basic subjects have a wide range of applications. Vacuum electronic devices are a promising device that can realize high-power terahertz radiation sources. Vacuum electronics technology is used as an important technical means to develop high-power electromagnetic radiation sources in these bands. Traveling wave tube is one of...

Claims

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Application Information

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IPC IPC(8): H01J23/24
CPCH01J23/24
Inventor 张建魏彦玉徐进殷海荣岳玲娜赵国庆
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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