关键词: 混沌思维进化算法, 八木天线, 高频结构仿真器（HFSS）

Abstract: CMEA（Chaos Mind Evolutionary Algorithm） is an optimal algorithm，mixing Mind Evolutionary Algorithm with Chaos Optimization Technology，can remarkably solve the disadvantages of MEA，such as the generation of the initial population is blind，random and redundant，so it is easy to get into part extremum solution.This proposed algorithm，compared with MEA，can remarkably avoid local convergence while producing a high convergence rate.The optimization design of Yagi-Uda antenna is performaced based on CMEA.With the model building and optimization in HFSS and MATLAB，the structure parameters of Yagi-Uda antenna with excellent performance are got.The results of simulation prove the advantage of CMEA in antenna engineering.

Key words: Chaos Mind Evolutionary Algorithm（CMEA）, Yagi-Uda antenna, High Frequency Structure Simulator（HFSS）