Time domain and frequency domain combined non-reciprocal medium micro-discharge threshold prediction method

Abstract

The invention discloses a time domain and frequency domain combined non-reciprocal medium micro-discharge threshold prediction method. The method is characterized in that a time domain method and a frequency domain method are combined, and in order to solve the problem that a non-reciprocal medium electric field and a non-reciprocal medium magnetic field cannot be accurately solved in a time domain algorithm, a finite element method is used for solving the size and distribution of the fields in a frequency domain; in order to solve the problem of low efficiency of a particle propulsion calculation method in a frequency domain algorithm, a solving frequency domain field is combined with a time domain algorithm, so that the operation efficiency is further improved. In addition, a particle motion technology, a secondary electron emission model and particle-electromagnetic boundary conditions are utilized to quickly calculate and predict the micro-discharge threshold of the non-reciprocalmedium. Particularly, when the micro-discharge threshold value is calculated, the prediction track of the equivalent macro particle motion can be obtained, so that the distribution of the equivalent macro particles and the electric quantity of the macro particles can be predicted.

Description

technical field [0001] The invention belongs to the fields of electromagnetic fields and microwaves, and in particular relates to a method for predicting microdischarge thresholds of non-reciprocal medium microwave devices combined with time domain and frequency domain. Background technique [0002] With the gradual development of microwave devices towards high power and miniaturization, microwave devices suitable for high frequency and high power have gradually attracted widespread attention. These devices show high potential and good application prospects in the development of spacecraft. Spacecrafts are located in working orbits at different altitudes, and the natural radiation environment of the universe has a large number of charged particles carrying a certain number of electrons. With the continuous development of spacecraft, the power of the required microwave devices is gradually increasing. Among these, the strong electromagnetic fields in many microwave devices ...

AI Technical Summary

Problems solved by technology

However, in the process of using the frequency domain method to solve the microdischarge, there is also a time step problem in the frequency domain, which leads to the time step of solving the electric field and magnetic field is much smaller than the time step of the particle propulsion method

In this software, it is first necessary to iterate the field several times, so that the sum of the time steps of the iterated electric field and magnetic field is the same as the time step of the particle advancement, and then perform a particle calculation and advancement, which results in a lower computational efficiency.

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