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Double screen frequency selective surface(FSS) is a very effective means of realizing the invisibility of radar-cabin from the detection of radar wave since it can well realize the flattened effect and rapid decrease. 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 electromagnetic waves are incident on the double screen FSS at varying angles, and an optimized FSS structure and transmission characteristics are obtained. Meanwhile, the relevant experimental samples are prepared by means of coating and lithography and are tested in microwave anechoic chamber. The results show that the optimized structure has a better stability with respect to incident angle of electromagnetic wave under the condition of 2GHz operation, thereby laying the foundation for the application of double screen FSS to curved surfaces at wide angles.
[1] Munk B A 2000 Frequency Selective Surface: Theory and Design (New York: Wiley)
[2] Lu J,Chen X Y,Wang J B 2008 Acta Phys. Sin. 57 7200 (in Chinese) [卢 俊、陈新邑、汪剑波 2008 物理学报 57 7200]
[3] Jun L,Sun G C,Wang J B 2009 Chin. Phys. B 18 1598.
[4] Jia H Y,Gao J S,Feng X G,Sun L C 2009 Acta Phys. Sin. 58 505 (in Chinese) [贾宏燕、高劲松、冯晓国、孙连春 2009 物理学报 58 505]
[5] Feng X G,Gao J S,Jia H Y 2009 Acta Phys. Sin. 58 1227 (in Chinese) [冯晓国、高劲松、贾宏燕 2009 物理学报 58 1227]
[6] Jia H Y, Gao J S 2007 Journal of China Academy of Electronics and Information Technology 2 593 (in Chinese) [贾宏燕、高劲松 2007 中国电子科学研究院学报 2 593]
[7] Li X Q, Feng X G, Gao J S 2009 Journal of Microwaves 25 16 (in Chinese)[李小秋、冯晓国、高劲松 2009 微波学报 25 16]
[8] Wu Z B,Wu Z,Lü M Y 2004 Chinese Journal of Radio Science 19 663 (in Chinese) [武振波、武 哲、吕明云 2004 电波科学学报 19 663]
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[1] Munk B A 2000 Frequency Selective Surface: Theory and Design (New York: Wiley)
[2] Lu J,Chen X Y,Wang J B 2008 Acta Phys. Sin. 57 7200 (in Chinese) [卢 俊、陈新邑、汪剑波 2008 物理学报 57 7200]
[3] Jun L,Sun G C,Wang J B 2009 Chin. Phys. B 18 1598.
[4] Jia H Y,Gao J S,Feng X G,Sun L C 2009 Acta Phys. Sin. 58 505 (in Chinese) [贾宏燕、高劲松、冯晓国、孙连春 2009 物理学报 58 505]
[5] Feng X G,Gao J S,Jia H Y 2009 Acta Phys. Sin. 58 1227 (in Chinese) [冯晓国、高劲松、贾宏燕 2009 物理学报 58 1227]
[6] Jia H Y, Gao J S 2007 Journal of China Academy of Electronics and Information Technology 2 593 (in Chinese) [贾宏燕、高劲松 2007 中国电子科学研究院学报 2 593]
[7] Li X Q, Feng X G, Gao J S 2009 Journal of Microwaves 25 16 (in Chinese)[李小秋、冯晓国、高劲松 2009 微波学报 25 16]
[8] Wu Z B,Wu Z,Lü M Y 2004 Chinese Journal of Radio Science 19 663 (in Chinese) [武振波、武 哲、吕明云 2004 电波科学学报 19 663]
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