中国物理B ›› 2009, Vol. 18 ›› Issue (4): 1598-1600.doi: 10.1088/1674-1056/18/4/051

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Frequency selective surface structure optimized by genetic algorithm

卢俊, 汪剑波, 孙贯成   

  1. School of Science, Changchun University of Science and Technology, Changchun 130022, China
  • 收稿日期:2008-10-08 修回日期:2008-11-07 出版日期:2009-04-20 发布日期:2009-04-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10647105).

Frequency selective surface structure optimized by genetic algorithm

Lu Jun(卢俊), Wang Jian-Bo (汪剑波), and Sun Guan-Cheng(孙贯成)   

  1. School of Science, Changchun University of Science and Technology, Changchun 130022, China
  • Received:2008-10-08 Revised:2008-11-07 Online:2009-04-20 Published:2009-04-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10647105).

摘要: Frequency selective surface (FSS) is a two-dimensional periodic structure which has prominent characteristics of bandpass or bandblock when interacting with electromagnetic waves. In this paper, the thickness, the dielectric constant, the element graph and the arrangement periodicity of an FSS medium are investigated by Genetic Algorithm (GA) when an electromagnetic wave is incident on the FSS at a wide angle, and an optimized FSS structure and transmission characteristics are obtained. The results show that the optimized structure has better stability in relation to incident angle of electromagnetic wave and preserves the stability of centre frequency even at an incident angle as large as 80°, thereby laying the foundation for the application of FSS to curved surfaces at wide angles.

Abstract: Frequency selective surface (FSS) is a two-dimensional periodic structure which has prominent characteristics of bandpass or bandblock when interacting with electromagnetic waves. In this paper, the thickness, the dielectric constant, the element graph and the arrangement periodicity of an FSS medium are investigated by Genetic Algorithm (GA) when an electromagnetic wave is incident on the FSS at a wide angle, and an optimized FSS structure and transmission characteristics are obtained. The results show that the optimized structure has better stability in relation to incident angle of electromagnetic wave and preserves the stability of centre frequency even at an incident angle as large as 80°, thereby laying the foundation for the application of FSS to curved surfaces at wide angles.

Key words: frequency selective surface (FSS), genetic algorithm (GA), optimization

中图分类号:  (Interactions of particles and radiation with matter)

  • 78.70.-g
68.35.B- (Structure of clean surfaces (and surface reconstruction)) 77.22.Ch (Permittivity (dielectric function))