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A Microstrip Periodic Snag-Line Slow-Wave Structure

A zigzag slow wave and zigzag line technology, applied in the field of microwave electric vacuum electronic devices, can solve problems such as processing difficulties, and achieve the effects of reduced processing difficulty, high coupling impedance, and increased flexibility

Active Publication Date: 2020-06-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, because the dielectric support rod needs to undergo the same bending as the meandering metal strip, that is, the same transformation cycle, its processing is more difficult. Secondly, the coupling impedance can be further improved

Method used

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  • A Microstrip Periodic Snag-Line Slow-Wave Structure
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  • A Microstrip Periodic Snag-Line Slow-Wave Structure

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Embodiment Construction

[0023] 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.

[0024] Aiming at the difficulty in processing the periodic microstrip zigzag lines in the millimeter-wave planar traveling wave tube, the present invention proposes a straight-line structure dielectric support rod to support the structure of the periodic microstrip zigzag line in the planar traveling wave tube. Periodic microstrip zigzag line is a V-shaped or U-shaped structure extending on a plane, and the dielectric support rod is located below the periodic microstrip zigzag line of the V-shaped or U-shaped structure, which plays the role of support and heat dissipation. T...

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Abstract

The invention discloses a microstrip periodic zigzag slow wave structure, which adopts a straight-line structure dielectric support rod to support the periodic microstrip zigzag line, thus greatly reducing processing difficulty and increasing design flexibility. At the same time, the dielectric support rod is made of diamond material, which can only be realized by semiconductor technology compared with the existing meandering strip dielectric support rod, and the material used is silicon as the substrate, and the equivalent dielectric constant can be smaller (silicon’s The dielectric constant is 11.5, compared to 5.7 for diamond), and the coupling impedance is higher in comparison. In addition, changing the embedded zigzag strip-shaped dielectric support rod into a straight-line structure dielectric support rod directly supports the lower surface of the periodic microstrip zigzag line, which will make the internal heat dissipation problem of the zigzagging slow wave structure of the microstrip more serious. However, since the diamond used in the present invention has good thermal conductivity, this problem is well taken into account.

Description

technical field [0001] The invention belongs to the technical field of microwave electric vacuum electronic devices, more specifically, relates to vacuum electronic devices such as traveling wave tubes and klystrons, and microstrip periodic meandering slow wave structures used in high-frequency and high-power microwave devices. Background technique [0002] The planar traveling wave tube is an important development direction of the miniaturized traveling wave tube. The slow wave structure it adopts is relatively simple, which is composed of thin conductive strips (microstrips) carved on the flat dielectric substrate. This planar slow wave structure generally uses a ribbon electron beam to increase the total current intensity without increasing the current density. This type of traveling wave tube has the advantages of small size, light weight, and low cost. [0003] The existing microstrip period meander slow-wave structure is formed by repeating a planar metal wire on a fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/24
CPCH01J23/24
Inventor 曹华崔灿王战亮宫玉彬黄华徐雄
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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