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Fractal structures has self-similar properties so that they can be applied in the field of frequency selective surface (FSS) as unit cell and the fractal FSS has the nature of simple ,multi-band characteristics on single layer FSS which can be used as spatial pass filters for the incident angle, polarization and the frequency of the electromagnetic wave. Take fractal cross dipole as example, which we can obtain by recursive algorithm and iterative technique, this work gives the expressions of the fractal elements’ geometry and then characterizes the FSS transmission response by the electric field integral equation for the current distribution on the single FSS screen derived from the Floquet's periodic theory unden impedance boundary condition. Genetic algorithm was applied to globally optimize the structure parameters in order to get the design of the double resonant FSS. Finally, FSS sample was prepared by optical lithography and measured in the anechoic chamber. Experimental results show good agreement with the calculations we made for the design of FSS with resonant frequencies 9.2 GHz and 29.4 GHz, which was what we expected from the periodic method of moment.
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Keywords:
- frequency selective surface (FSS) /
- fractal element /
- multiband /
- periodic method of moment
[1] Li X Q, Feng X G, Gao J S 2008 Acta Phys. Sin. 57 3193(in Chinese) [李小秋、冯晓国、高劲松 2008 物理学报 57 3193]
[2] Li X Q, Gao J S, Zhao J L, Sun L C 2008 Acta Phys. Sin. 57 3803 (in Chinese) [李小秋、高劲松、赵晶丽、孙连春 2008 物理学报 57 3803]
[3] Fang C Y, Zhang S R, Lu J, Wang J B, Sun L C 2010 Acta Phys. Sin. 59 5023 (in Chinese) [方春易、张树仁、卢 俊、汪剑波、孙连春 2010 物理学报 59 5023]
[4] Jordi Romeu, Rahmat-Samii Y 1999 Proc. IEEE Antennas and Propagation Soc. Int. Symp. 3 1734
[5] Gianvittorio J P, Rahamat-Samii Y 2001 Proc. IEEE Antennas and Propagation Soc. Int. Symp. Dig 640—643
[6] 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]
[7] Munk B A 200 Frequency selective surface:theory and design (New York:Wiley)
[8] 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]
[9] Chi H C, Mittra R 1990 IEEE Transactions on Antennas and Propagation 38 40
[10] Charkravarty S, Mittra R, Lanuzza L 2002 IEEE Transactions on Antennas and Propagation 50 284
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[1] Li X Q, Feng X G, Gao J S 2008 Acta Phys. Sin. 57 3193(in Chinese) [李小秋、冯晓国、高劲松 2008 物理学报 57 3193]
[2] Li X Q, Gao J S, Zhao J L, Sun L C 2008 Acta Phys. Sin. 57 3803 (in Chinese) [李小秋、高劲松、赵晶丽、孙连春 2008 物理学报 57 3803]
[3] Fang C Y, Zhang S R, Lu J, Wang J B, Sun L C 2010 Acta Phys. Sin. 59 5023 (in Chinese) [方春易、张树仁、卢 俊、汪剑波、孙连春 2010 物理学报 59 5023]
[4] Jordi Romeu, Rahmat-Samii Y 1999 Proc. IEEE Antennas and Propagation Soc. Int. Symp. 3 1734
[5] Gianvittorio J P, Rahamat-Samii Y 2001 Proc. IEEE Antennas and Propagation Soc. Int. Symp. Dig 640—643
[6] 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]
[7] Munk B A 200 Frequency selective surface:theory and design (New York:Wiley)
[8] 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]
[9] Chi H C, Mittra R 1990 IEEE Transactions on Antennas and Propagation 38 40
[10] Charkravarty S, Mittra R, Lanuzza L 2002 IEEE Transactions on Antennas and Propagation 50 284
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