论文部分内容阅读
采用基于矩量法的电磁仿真软件FEKO建立了混响室仿真模型,并对步进模式下的混响室模型进行了数值计算。将混响室数值计算与遗传算法相结合,通过仿真计算与理论分析研究了混响室发射天线指向对场均匀性的影响。研究结果表明:改变发射天线指向,其本质是改变混响室各模式前的加权系数,导致表征混响室工作区域场均匀性的电场标准偏差随之发生改变。发射天线指向处于最优配置时,工作区域各轴向电场标准偏差较初始状态有所下降,说明通过优化提高了工作区域场均匀性。
The reverberation chamber simulation model was established by the electromagnetic simulation software FEKO based on the moment method, and the reverberation chamber model under the step mode was numerically calculated. The reverberation chamber numerical calculation and genetic algorithm are combined. The effects of the reverberation chamber transmitting antenna pointing field uniformity are studied by simulation and theoretical analysis. The results show that changing the directivity of the transmitting antenna essentially changes the weight coefficient before the reverberation chamber mode, resulting in the change of the standard deviation of the electric field characterizing the field uniformity of the reverberation chamber. When the transmitting antenna points in the optimal configuration, the standard deviation of the axial electric field in the working area decreases from the initial state, which shows that the field uniformity of the working area is improved by the optimization.