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Method for simulating backward wave oscillation of traveling wave tube

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

Active Publication Date: 2018-12-18
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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  • Method for simulating backward wave oscillation of traveling wave tube
  • Method for simulating backward wave oscillation of traveling wave tube
  • Method for simulating backward wave oscillation of traveling wave tube

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Embodiment Construction

[0017] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

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

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

[0020]

[0021] (1) where represents the forward wave, Indicates the reverse wave.

[0022] It can be seen from formula (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 injection wave interaction is the energy transfer between electrons and a series of harmonics on the...

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Abstract

The invention belongs to the technical field of traveling wave tube backwave simulation, in particular to a traveling wave tube backwave oscillation simulation method. The 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, combines the high-frequency field equation of the backward wave, the equation group constructed by the electronic phase equation and the motion equation, and obtains the backward wave interaction result of the traveling wave tube through the step-by-step iterative calculation; the method of the present invention is capable of calculating backwave interactions in various periodic structures within a few minutes. As the method of the invention directly processes the field distribution of a single period in a periodic structure, the invention is not confined to a specific traveling wave tube, can calculate the backwaves of various structures with periodicity, and provides great convenience for the backwaves calculation of various traveling wave tubes. The invention realizes both the universality and the high efficiency when the traveling wave tube backward wave oscillation is studied.

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 device. It is widely used in key national defense projects such as radar, electronic countermeasures and communications due to its high frequency, high gain, and high power. It is known as a weapon equipment heart". The most basic requirement for the normal use of the traveling wave tube is stability. When the traveling wave tube is working, there are various space harmonics in the slow wave system. The energy of the return wave is amplified, and the return wave oscillation occurs. Return wave oscillation will have a great impact on the stability of the traveling wave tube, resulting in the failure of the traveling wave tube to work normally. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
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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