Microwave component micro-discharge numerical simulation method based on GPU architecture

Abstract

The invention relates to a microwave component micro-discharge numerical simulation method based on a GPU architecture, which comprises the following steps of: 1) establishing a three-dimensional model of a microwave component, determining a material of the three-dimensional model and secondary electron emission characteristic parameters of the material, and determining micro-discharge simulationparameters of the microwave component; 2) establishing a grid model of the microwave component three-dimensional model and a particle model of micro-discharge electrons; 3) determining initial distribution of an electromagnetic field and initial distribution of particles in the three-dimensional model grid model; 4) solving a Maxwell equation set in each small grid based on a GPU technology to iteratively update electromagnetic field distribution, and obtaining all electromagnetic field values of M time steps; and 5) solving the Lorentz force equation set to iteratively update the particle motion, obtaining the total particle number of each time step of the M time steps, completing the micro-discharge numerical simulation when the input power is P, and determining whether the micro-discharge occurs or not when the input power is P.

Description

technical field [0001] The invention relates to a numerical simulation method for micro-discharge of microwave components based on GPU architecture. Background technique [0002] Micro-discharge is a key factor affecting the long life and high reliability of spacecraft payloads, and it is also the most serious single-point failure link for spacecraft such as communication, data transmission and navigation under high-power input. Especially for complex dielectric microwave components, such as dielectric duplexers, ferrite circulators, etc., once micro-discharge occurs, it will lead to hard faults that cannot be repaired on-orbit. Due to the inability to fully verify on-orbit, and the ground test cannot cover all the space environmental conditions and actual working conditions on the one hand, and on the other hand, the test period is long and the cost is high. Carrying out numerical simulation and simulation design is the key to full ground verification. It is necessary to f...

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Problems solved by technology

[0006] Look up the literature, search for "Mulitipactor simulation", "Improvement of simulation efficiency", "micro discharge", "numerical simulation", "simulation efficiency" in the database, check I have read many literatures about micro-discharge, among which the numerical simulation method or simulation method of micro-discharge is involved: "Multipactor discharge on a dielectric surface: Statistical theory and simulation results", A. Sazontov, V. Semenov, and M. Buyanova etc. .PHYSICS OF PLASMAS 12,093501,2005 relates to an analytical method for obtaining the probability density of the arrival time of secondary electrons on the surface of the medium when there is an electrostatic field, thereby performing micro-discharge analysis, and does not involve the local particles described in the present invention Simulation method; "Multipactor Prediction in NovelHigh-Power Low-Pass Filters with Wide Rejection Band", I.Arregui, S.Anza, I.Arnedo, Proceedings of the 39th European Microwave Conference, 2009 involves a new type of filter with wide rejection band The micro-discharge breakdown threshold of high-power low-pass filters, the study of the relationship between the physical size of this type of filter and the stop band, and the use of flat plate approximation theory to analyze the micro-discharge of different physical size filters are essentially different from the present invention; "Enhanced Prediction of Multipaction Breakdown in Passive Waveguide Components including Space Charge Effects", S.Anza, C.Vicente, D.Raboso, involves the micro-discharge simulation method after considering the space charge effect, but does not involve the improvement of micro-discharge simulation efficiency. It is essentially different from the present invention; "Prediction Tools of Multipactor Breakdown in Passive Components for Space Applications", V.E.Boria, B.Gimeno, C.Vicente, MTTS-IMS, 2007 relates to a method for microdischarge analysis using flat plate approximation theory, Substantially different from the present invention

[0007] In addition, I found several papers on micro-discharge numerical simulation and simulation, which involved micro-discharge analysis methods for microwave components with different physical structures, but none of them involved how to improve micro-discharge numerical simulation Simulation efficiency, which is essentially different from the present invention

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