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Distribution attenuating confocal waveguide gyrotron travelling wave tube high frequency system

A traveling wave tube and waveguide technology, which is applied in the field of confocal waveguide gyroscopic traveling wave tube, can solve problems such as the output signal not yet obtained, and achieve the effects of reducing diffraction loss, reducing load, and improving output power and overall efficiency.

Active Publication Date: 2017-10-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

The China Academy of Engineering Physics has only obtained the result of zero drive stability in the test, and has not yet obtained a stable output signal

Method used

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  • Distribution attenuating confocal waveguide gyrotron travelling wave tube high frequency system
  • Distribution attenuating confocal waveguide gyrotron travelling wave tube high frequency system
  • Distribution attenuating confocal waveguide gyrotron travelling wave tube high frequency system

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Embodiment Construction

[0018] In the following, the present invention will be further described in detail through the design example of the high-frequency system of the W-band distributed attenuation confocal waveguide gyrotraveling wave tube and the accompanying drawings.

[0019] The reason why the confocal waveguide has mode-selective properties is that its laterally open structure causes it to generate diffraction losses, which are different for different modes. The mode working in the confocal waveguide is generally HE mn Mode, for the mode of m = 0, the energy is concentrated in the center of the mirror, so there is only weak edge attenuation. For modes with m>0, most of the energy is closer to the edge of the mirror and thus is more easily lost. In the confocal waveguide gyrotraveling wave tube, we generally only care about HE 0n model. In this embodiment, the distance between the two mirrors of the confocal waveguide is known to be 7mm, so the working mode HE mn is ok for HE 04 mold. T...

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Abstract

The invention discloses a distribution attenuating confocal waveguide gyrotron travelling wave tube high frequency system and belongs to the technical field of microwave, millimeter wave and terahertz devices. The structure is composed of confocal waveguides which are symmetrical up and down. Side faces of the confocal waveguides are opened. Mirror surface curvatures of the confocal waveguides are consistent. Each confocal waveguide comprises an input uniform section, an input transition section, an interaction section, an output transition section and an output uniform section. According to the structure, a backward wave oscillator circuit of a parasitic mode is cut off through adoption of the interaction sections of the confocal waveguides with very narrow mirror surface widths, and moreover, it is ensured that the interaction sections are long enough, thereby realizing relatively high linear gain. Diffraction losses of a high frequency field after amplification are reduced by increasing the mirror surface widths of the output uniform sections, so the output power and total efficiency of a working mode are improved.

Description

technical field [0001] The invention belongs to the technical field of microwave, millimeter wave and terahertz devices, in particular to a high-frequency system of a distributed attenuation confocal waveguide gyrotraveling wave tube, which can be applied to the confocal waveguide gyrotraveling wave tube in millimeter wave and terahertz bands. Background technique [0002] With the rapid development of modern high-performance radar and long-distance communication technology, the requirements of the system for the operating frequency, power, bandwidth and other performance of the signal source are increasing day by day. The interaction structure of the gyrotron TWT is a smooth waveguide, which can theoretically achieve higher efficiency and wider bandwidth than other gyrotron devices. However, it is precisely because of the smooth waveguide interaction structure of the gyro TWT that it is prone to various parasitic oscillations, which will seriously affect the performance of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J23/36
CPCH01J23/36
Inventor 王建勋姚叶雷田启知罗勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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