J4

• 研究论文 • 上一篇    下一篇

用于微波电路优化的免疫算法

许殿;史小卫

  

  1. (西安电子科技大学 理学院, 陕西 西安 710071)

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-12-20 发布日期:2004-12-20

Microwave circuit optimization based on the immune algorithm

XU Dian;SHI Xiao-wei

  

  1. (School of Science, Xidian Univ., Xi'an 710071, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-12-20 Published:2004-12-20

摘要: 免疫算法将浓度、亲和力作为个体解的最优性标准,从而低浓度、高适应的个体得到更多的繁殖机会.由于免疫算法重视解群体中个体的多样性,避免了现有算法的过早收敛.用一个典型的数学算例验证了免疫算法的多峰值寻优性能,并用4种方法分别设计宽带阶梯阻抗变换器,结果表明基于免疫算法的微波电路优化设计具有可行性和高效性.

关键词: 免疫算法, 遗传算法, 过早收敛, 阶梯阻抗变换器

Abstract: The immune algorithm(IA) selects thickness and affinity as the optimality criterions of individuals, and accordingly reproduces the individuals that have small thickness and large fitness. The IA increases the ability to fight premature by calculating individuals' multiplicaties. A numerical example demonstrates its capability to solve the multimodal function. Finally, broadband stepped impedance transformers are designed by four methods respectively. The result shows that microwave circuit optimization based on the IA is feasible and high efficient.

Key words: immune algorithm, genetic algorithm, premature convergence, stepped impedance transformer

中图分类号: 

  • TN624