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Banded electron beam double-slot trapezoid line coupling cavity slow wave device

A strip electron, coupled cavity technology, applied in the direction of the circuit components of the transit time type electron tube, etc., can solve the problems of high processing and assembly precision requirements, small size of the coupled cavity traveling wave tube, limited output power, etc., and achieves heat dissipation. Strong, high output power, wide bandwidth effect

Active Publication Date: 2019-10-15
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But they each have their own advantages and disadvantages. The helical traveling wave tube has a very wide bandwidth, but the heat dissipation performance and output power are greatly limited; especially when the traveling wave tube works in the millimeter wave and submillimeter wave bands, due to the size of the helix Extremely small, difficult to dissipate heat, and its power capacity is smaller
Although the coupling cavity traveling wave tube has a much higher power output than the helix, due to the influence of the band edge oscillation, its bandwidth is narrow, and the coupling cavity traveling wave tube is small in size, requiring high processing and assembly precision

Method used

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  • Banded electron beam double-slot trapezoid line coupling cavity slow wave device
  • Banded electron beam double-slot trapezoid line coupling cavity slow wave device
  • Banded electron beam double-slot trapezoid line coupling cavity slow wave device

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Embodiment

[0024] The present invention is a belt-shaped electronic injecting double-slot trapezoidal line-coupled cavity slow wave device, comprising: a plurality of cavities and cavity walls alternately connected with line-coupled cavities, and the front end and the end of the slow wave device are exactly the cavity wall;

[0025] like figure 1 As shown in (a), the coupling cavity is cut along the xoy plane, its cross-sectional shape is rectangular, and there are coupling grooves 1 and 2 with the same structure on the cavity wall;

[0026] The shapes of the coupling groove 1 and the coupling groove 2 are semicircular at both ends and a rectangle in the middle; wherein, the coupling groove 1 is close to the narrow side of the cavity and is parallel to the narrow side, and the coupling groove 2 is close to the wide side of the cavity and parallel to the wide side. The sides are parallel; in this embodiment, the shape of the coupling groove 1 and the coupling groove 2 can also be rectang...

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Abstract

The invention discloses a banded electron beam double-slot trapezoid line coupling cavity slow wave device, which is composed of a line coupling cavity body formed by alternately connecting a plurality of cavities and cavity walls. Each cavity wall is provided with a coupling slot close to and parallel to the narrow edge of the corresponding cavity and a coupling slot close to and parallel to thewide edge of the cavity, and a banded electron beam channel shaped like the coupling slot parallel to the wide edge is arranged at the center of each cavity. The electromagnetic wave transmitted alongeach cavity is coupled to the next cavity by the coupling slots. When an electron beam is injected into any banded electron beam channel, the electron beam interacts with the high-frequency field electromagnetic wave in the corresponding cavity for energy exchange, the high-frequency field electromagnetic wave modules the electron beam, and the modulated electron beam yields energy so as to amplify the electromagnetic wave.

Description

technical field [0001] The invention belongs to the technical field of microwave electric vacuum devices, and more specifically relates to a slow-wave device for strip-shaped electron injecting double-slot trapezoidal line coupling cavity. Background technique [0002] Vacuum electronic devices are systems that use charged particles (usually electrons) to interact with electromagnetic waves in a vacuum, and convert the DC energy of the electron beam into electromagnetic wave energy output. [0003] The most widely used slow wave systems in traveling wave tubes are the helix and coupled cavity. But they each have their own advantages and disadvantages. The helical traveling wave tube has a very wide bandwidth, but the heat dissipation performance and output power are greatly limited; especially when the traveling wave tube works in the millimeter wave and submillimeter wave bands, due to the size of the helix Extremely small, heat dissipation is difficult, and its power capa...

Claims

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Application Information

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IPC IPC(8): H01J23/24
CPCH01J23/24
Inventor 王战亮罗瑾璟宫玉彬段兆云巩华荣路志刚潘攀
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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