Simulation method and device for predicting electromagnetic radiation

Abstract

The invention discloses a simulation method and device for predicting electromagnetic radiation, and the method comprises the steps: building an initial simulation model for predicting electromagnetic radiation, wherein the simulation model comprises part models of a PCB, a cable, a load end, a power supply, an artificial network, a metal ground, a test desktop and an antenna model, and determining the shape and spatial distance of each part model; defining material attributes of each part model according to a finite element calculation electromagnetism algorithm to obtain a final simulation model; based on the final simulation model, defining a frequency domain power source at the connection point of the power supply and the cable, defining an antenna model port to receive a load, and integrating an electric field on a port connection line at the load receiving position; performing mesh generation on the final simulation model according to finite element computational electromagnetism; and simulating to obtain a port voltage result of the antenna model. According to the invention, the influence of the test antenna on the test result is considered, and the simulation application with the simulation being more suitable for the actual test working condition is constructed, so that the simulation result is more accurate.

Description

technical field [0001] The invention relates to the technical field of electromagnetic radiation simulation, in particular to a simulation method and device for predicting electromagnetic radiation. Background technique [0002] As more and more products are electrified, the problem of electromagnetic compatibility is becoming more and more serious, and it has become an issue worthy of attention. In the early stage of product development, in order to save research and development costs, the components that rely on electromagnetic characteristics must be processed before the product is processed. To control the electromagnetic characteristics of products to reduce the cost of repeated iterations, simulation technology has also received more and more attention, and electromagnetic radiation emission simulation is one of the common projects in simulation. [0003] The main problem encountered in the current electromagnetic radiation emission simulation is the large deviation be...

AI Technical Summary

Problems solved by technology

[0003] The main problem encountered in the current electromagnetic radiation emission simulation is the large deviation between test and simulation results. In most cases, only trend prediction can be made, but more accurate simulation and test quantitative comparison are required. Traditional EMC simulation only considers To study the radiation generation performance of the object body, only the body modeling is simulated. There are certain differences between the test conditions and the simulation content, which leads to the deviation of the simulation and test results.

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