混响室发射天线位置优化仿真及实验

摘要

为提高混响室测试区域的场均匀性,在分析发射天线影响场均匀性原理基础上,采用基于矩量法的电磁仿真软件FEKO对混响室仿真模型进行数值计算,通过与遗传算法相结合研究了混响室发射天线的位置对测试区域场均匀性的影响,得到了优化后发射天线位置及相应的表征混响室测试区域场均匀性的电场标准偏差值.优化后,测试区域场均匀性较优化前有所改善,并通过实验验证了该优化仿真方法的正确性.%In order to improve the field uniformity in the work space of a reverberation chamber, the mechanism of the posi tion of emission antenna affecting the field uniformity was analyzed, and the simulation model was constructed and analyzed with FEKO software based on the method of moments combining genetic algorithm(GA) with MOM was put forward to analyze and optimize the reverberation chamber, and the effect of the position of emission antenna on the field uniformity in the work space was investigated. The optimal results show that the field uniformity of working volume is improved by optimization. The experi ments verify that the method could be used to optimize the design of a reverberation chamber.