A Cosine Grating Loaded Sine-Waveguide-Like Slow-Wave Structure

A technology of sine waveguide and slow wave structure, which is applied to the circuit components of transit-time electronic tubes, and can solve the problems of low interaction efficiency, low gain, and long saturation interaction length, etc.

Active Publication Date: 2022-03-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the electric field strength of this structure in the direction of electromagnetic wave transmission is relatively weak, so its coupling impedance is small, resulting in a sinusoidal waveguide traveling wave tube with low output power, low interaction efficiency, low gain and long saturation interaction length. long-term defects

Method used

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  • A Cosine Grating Loaded Sine-Waveguide-Like Slow-Wave Structure
  • A Cosine Grating Loaded Sine-Waveguide-Like Slow-Wave Structure
  • A Cosine Grating Loaded Sine-Waveguide-Like Slow-Wave Structure

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Embodiment Construction

[0024] 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.

[0025] In this example, if figure 2 , 3 , 4, the cosine grid-loaded sinusoidal waveguide slow-wave structure of the present invention includes a sine waveguide 1, the length of its broadside is a, the length of the narrowside is b, and the longitudinal (transmission direction) up and down is a sine wave with the broadside as the center. The linear periodic banding 2, the height of the sinusoidal periodic banding 2 is h, the period length of the sinusoidal periodic banding 2 is p, and the width of the sinusoidal periodic banding 2 is a.

[0026] Between the periodic strip...

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Abstract

The invention discloses a cosine grid-loaded sinusoidal waveguide slow-wave structure. On the basis of the existing flat-topped sine waveguide slow-wave structure, the truncated top part has a period of cosine undulation in the broadside direction to form a cosine grid. , that is, a cosine grating is loaded between the upper trough and the lower peak of the sine waveguide. After testing, the cosine grid-loaded sinusoidal waveguide slow wave structure of the present invention has a higher coupling impedance value, the electromagnetic field is more concentrated in the center area of ​​the electron injection channel, the space on both sides of the electronic injection channel is larger, and the injection wave interaction in the traveling wave tube At the same time, the magnetic field can be effectively reduced, and the high-frequency transmission characteristics have been greatly improved, which means that the interaction ability between the electron beam and the electromagnetic wave is increased, 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 cosine grid-loaded slow wave structure similar to a sine waveguide. Background technique [0002] The development of electromagnetic spectrum resources in the terahertz frequency band is one of the frontier research directions in the field of electronic science and technology today. Electromagnetic waves in the terahertz frequency band have important research value and broad application prospects in many fields such as scientific research, communication equipment, and national economy. Vacuum electronic devices are a promising device that can realize high-power terahertz wave radiation sources. Traveling wave tubes and return wave tubes are a type of millimeter wave and terahertz radiation sources that are widely used in vacuum electronic devices. Among them, traveling wave tubes are the most widely used devices in military equipment, satellite commu...

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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