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A trapezoidal interleaved double-grid slow-wave structure

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

Active Publication Date: 2022-04-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A trapezoidal interleaved double-grid slow-wave structure
  • A trapezoidal interleaved double-grid slow-wave structure
  • A trapezoidal interleaved double-grid slow-wave structure

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Embodiment Construction

[0022] Specific embodiments of the present invention will be described below in conjunction with 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, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.

[0023] In this example, if figure 2 , 3 As shown, the trapezoidal interleaved double-grid slow-wave structure of the present invention includes a rectangular metal tube 1 and a trapezoidal interleaved double grid 2, wherein the wide side of the rectangular metal tube 1 is a.

[0024] The trapezoidal staggered double grid 2 includes a plurality of trapezoidal grids 201 placed upside down on the upper wall of the rectangular metal tube 1 with the interval p in the upper row (constituting the upper row of ladder-like grids) and the interval p in the lower row along the longi...

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Abstract

The invention discloses a trapezoidal interlaced double-grid slow-wave structure. On the basis of the interlaced double-grid slow-wave structure, the bottom adopts a trapezoidal grid, the middle part adopts a rectangular grid, and the circular electron injection channel is opened on the rectangular grid. The trapezoidal grid and the rectangular grid are used. The rectangular grids form a trapezoidal grid, and the ladder-like grids are arranged alternately in the longitudinal direction, that is, in the transmission direction. After testing, the dispersion characteristics of the trapezoidal interleaved double-grid slow-wave structure of the present invention have been improved, with wider bandwidth, greatly reduced high-frequency loss, and higher coupling impedance value at the same time, because the axial field component of the electron injection channel is relatively Concentration, which means that the interaction ability between the electron beam and the electromagnetic wave increases, thereby improving the output power, gain and interaction efficiency of the traveling wave tube.

Description

technical field [0001] The invention belongs to the technical field of vacuum electronics, and more specifically relates to a trapezoidal interleaved double-grid 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. Basic subjects have a wide range of applications. Vacuum electronic devices are a promising device that can realize high-power terahertz wave radiation sources. Vacuum electron technology is used as an important technical means to develop high-power electromagnetic radiation sources in these bands. Traveling wave tube is a kind of high-power radiation source widely used in it. The slow wave structure is mainly used in microwave electric vacuum devices. Its function is to reduce the phase velocity of the electromagnetic wave, keep it synchronized with the electron beam, and fully interact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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 ELECTRONICS SCI & TECH OF CHINA
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