论文部分内容阅读
根据Robinson等效传输线理论,估算了有孔屏蔽箱体在任意入射方向平面波照射下的屏蔽效能。该方法将任意入射方向平面波的传播矢量和电场矢量分解,使得复杂模型等效为两个不同极化方向平面波垂直入射箱体开孔平面的简单模型,从而推导了计算屏蔽效能的一般表达式。数值仿真结果与CST软件仿真吻合较好,验证了方法的有效性。分析了平面波入射仰角和方位角对有孔箱体屏蔽效能的影响,数值结果表明:在0°~90°范围内,箱体屏蔽效能随着平面波入射仰角的减小而增大,随着平面波入射方位角的减小而减小。
According to the theory of Robinson equivalent transmission line, the shielding effectiveness of a perforated shielding box under the incident plane wave is estimated. In this method, the propagation vector and the electric field vector of any incident plane wave are decomposed so that the complex model is equivalent to a simple model of plane perpendicular to the plane of incidence of two plane polarizations, and the general expression for calculating the shielding effectiveness is deduced. The numerical simulation is in good agreement with the simulation of CST software, which verifies the effectiveness of the method. The effects of plane wave elevation and azimuth angle on the shielding effectiveness of a perforated box are analyzed. The numerical results show that the shielding effectiveness of a box increases with the incident elevation angle of the plane wave in the range of 0 ° ~ 90 °. As the plane wave The incident azimuth decreases and decreases.