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.
Received: 08 October 2008
Revised: 07 November 2008
Accepted manuscript online:
PACS:
78.70.-g
(Interactions of particles and radiation with matter)
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10647105).
Cite this article:
Lu Jun(卢俊), Wang Jian-Bo (汪剑波), and Sun Guan-Cheng(孙贯成) Frequency selective surface structure optimized by genetic algorithm 2009 Chin. Phys. B 18 1598
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