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A method for simulating the return wave oscillation of a traveling wave tube

A simulation method and technology of traveling wave tubes, applied in design optimization/simulation, special data processing applications, etc., to achieve the effect of convenient return wave calculation

Active Publication Date: 2022-07-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] In view of the above existing problems or deficiencies, in order to solve the problem that the existing traveling wave tube return wave oscillation research method cannot have both versatility and high efficiency; the present invention provides a traveling wave tube return wave oscillation simulation method, the purpose of which is to In-depth analysis of the return wave, establishing a method for simulating the return wave interaction of various devices, and solving the problems existing in the return wave interaction process of various traveling wave tubes

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  • A method for simulating the return wave oscillation of a traveling wave tube
  • A method for simulating the return wave oscillation of a traveling wave tube
  • A method for simulating the return wave oscillation of a traveling wave tube

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[0017] The technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments.

[0018] Step 1, yes figure 1 For the target traveling wave tube shown, by analyzing the interaction process between the electron injection and the return wave, the expression of the return wave power is established, and the high-frequency field equation of the return wave of the traveling wave tube is obtained.

[0019] The electric and magnetic fields in the slow-wave structure of the traveling wave tube can be expanded by the Fourier transform:

[0020]

[0021] (1) in the formula represents the forward wave, Represents a reverse wave.

[0022] It can be seen from equation (1) that the field on the slow wave line of the traveling wave tube is actually composed of a series of spatial harmonic components, and the essence of the wave interaction is the transfer of energy between electrons and a series of harmonics on the slow ...

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Abstract

The invention belongs to the technical field of traveling wave tube return wave simulation, and in particular relates to a traveling wave tube return wave oscillation simulation method. The present invention obtains the high-frequency field distribution at any position in the periodic structure of the traveling wave tube through the high-frequency structure simulation software HFSS, and then combines the high-frequency field equation of the return wave, the electronic phase equation and the equation of motion to construct the equation group, and calculates through step-by-step iteration. The back-wave interaction result of the traveling wave tube is obtained; the method of the present invention can calculate the back-wave interaction in various periodic structures within a few minutes. Since the method of the present invention directly deals with the field distribution of a single period in the periodic structure, the present invention is not limited to a specific traveling wave tube, and can calculate the return waves of various periodic structures, which can be used for various The return wave calculation of traveling wave tube provides great convenience. The invention realizes both versatility and high efficiency in the research of the return wave oscillation of the traveling wave tube.

Description

technical field [0001] The invention belongs to the technical field of traveling wave tube return wave simulation, and in particular relates to a traveling wave tube return wave oscillation simulation method. Background technique [0002] Traveling wave tube is a high-gain broadband microwave / millimeter-wave power amplifier. It has the advantages of high frequency, high gain and high power, and is widely used in key national defense projects such as radar, electronic countermeasures and communication. It is known as weapon equipment. heart". The most basic requirement is stability for the traveling wave tube to be used normally. When the traveling wave tube is working, there are various space harmonics in the slow wave system. The return wave energy is amplified, and the return wave oscillation occurs. The return wave oscillation will have a great impact on the stability of the traveling wave tube, which will cause the traveling wave tube to not work properly. Therefore, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 胡玉禄郝晓宇胡权朱小芳李斌杨中海
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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