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针对电脑机箱开孔产生的电磁辐射骚扰之一,建立了矩形机箱模式函数,并通过求解相应的TM场和TE场方程得到各种模式的电场分布。理论分析与实验及仿真结果表明,并行口和串行口开孔易导致电磁辐射骚扰,且在机箱yz面中心位置开孔引起的辐射骚扰最强,从而为辐射骚扰抑制提供理论依据。
Aiming at the harassment of electromagnetic radiation generated in the opening of a computer case, a rectangular chassis mode function is established, and various modes of electric field distribution are obtained by solving the corresponding TM field and TE field equations. The results of theoretical analysis, experiment and simulation show that the opening of parallel port and serial port can easily lead to electromagnetic radiation harassment, and the radiation hacking caused by the hole in the center of the yz plane is the strongest, which provides the theoretical basis for the suppression of radiation harassment.