| More and more electronic equipments will be applied in many fields in our society with modern science and technology's rapid development. In limited space, equipment's power increases, frequency spectrum's distribution turn dense. The conditions mentioned above will result in tougher electromagnetic environment problems. In order to ensure the equipments under this surroundings work normally, many EMC problems must be solved, especially, the prediction and analysis to electromagnetic ambient level is very import.In this thesis, electromagnetic interference mechanism was studied. Interference source, interference characteristic and interference types was studied. The relation of interference level with space and frequency was studied. Mathematical models of interference source, antennas transmission loss and interference field intensity were established. The modules of electromagnetic environment simulation and software of electromagnetic interference simulation were designed. Conditions that system would receive interference were studied. Methods of EMI control were researched. The verification in combination with local electronic image show the software is utility.The software development of electromagnetic environment simulation has very import practical value to establish integral software of systematic EMC simulation, summarize system EMC design discipline and requirement. The use of DLL during the course of module development is not only convenient for software integration, maintenance and update but also make full use of the system resource. |
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