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微粒群(PSO)算法具有概念简单、容易实现及收敛速度快等优点,离散二进制PSO是PSO在二进制空间的扩展。将离散二进制PSO算法与FDTD法相结合来优化设计宽频带微带天线,以矩形微带贴片天线为例,仿真结果显示,在将PSO算法中的微粒维数分别设置为20维和64维的情形下,通过对天线贴片形状的优化,天线的-10dB带宽由原来的4.4%左右拓宽至大约13.8%和14.5%,优化成效显著。
Particle swarm optimization (PSO) has the advantages of simple concept, easy implementation and fast convergence. Discrete binary PSO is an extension of PSO in binary space. The discrete binary PSO algorithm and the FDTD method are combined to optimize the design of the broadband microstrip antenna. Taking the rectangular microstrip patch antenna as an example, the simulation results show that when the particle dimension in the PSO algorithm is set to 20 dimension and 64 dimension, respectively By optimizing the shape of the antenna patch, the -10dB bandwidth of the antenna is broadened from about 4.4% to about 13.8% and 14.5%, and the optimization effect is remarkable.