基于MOPSO算法的小型化复合结构槽螺旋天线设计

Miniaturized design of complex structure of slot planar antenna based on multi-objective optimization

文中设计了一个复合结构的平面螺旋天线，并加载了贴片电阻和外圈铜环，使用多目标粒子群优化算法，利用Matlab软件实现了分布式协同优化仿真，达到了小型化的设计目的．仿真结果表明：在1.1～18 GHz频段内回波损耗小于－10 dB，在0.8～18 GHz频段内轴比小于3 dB．与传统的平面螺旋天线相比，该天线的直径仅为54 mm，且天线的电性能得到了提高．

A planar spiral antenna with composite structures in which chip resistors and outer brass rings were in-stalled.We use multi-objective particle swarm optimization to optimize the antenna so as to achieve the optimal antenna.The results of simulation show that the return loss is less than 10 dB in the band range from 1.1 GHz to 18 GHz, and the axial ratio is less than 3 dB in the range from 0.8 GHz to 18 GHz.This new antenna has better characteristics of impedance and circular polarization compared with the traditional one, while its diameter is only 54 mm, which improves the performance of the antenna.