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An ultra-wide band metamaterial may be achieved via the design of some structures. A metamaterial unit supporting two-dimensional (2D) incident electromagnetic (EM) wave is proposed based on the mushroom type-structures, which has an ultra-wide band with seamlessly combined band of right-handed and left-handed pass-bands. This unit is designed by setting two reverse symmetrical mushroom-shaped strips on each side of the dielectric substrate respectively, and the electric resonance and the magnetic resonance could be excited simultaneously. With CST software, the right-handed and left-handed properties are analyzed and verified by means of spectrum analysis, effective parameters of permittivity, permeability and index of refraction extracted from S parameters, and equivalent magnetic resonance circuits. The results show that the structure can present left-handed properties with 1 GHz left-handed pass-band in X waveband, either EM wave is incident in the direction perpendicular or parallel to the plane of the substrate. When the EM wave is incident in the direction perpendicular to the substrate, the right-handed and the left-handed pass-bands appear at 7.2 GHz9.3 GHz and 9.3 GHz11 GHz respectively; while when the EM wave is incident in the direction parallel to the substrate, the right-handed and the left-handed pass-bands appear at 7.0 GH9.0 GHz and 9.0 GHz10 GHz respectively. It also shows that the zero indexes of refraction occur at 9.3 GHz and 9.0 GHz in the tow instances above. So that a plus-zero-negative metamaterial is constructed and a 2D incident balanced-structure with an ultra-wide band of 3 GHz is achieved.
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Keywords:
- mushroom-shaped structure /
- left-handed material /
- two-dimensional incidence /
- balanced-structure
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[12] Chen H S, Ran L X, Huangfu J T, Zhang X M, Chen K S 2004Phys. Rev. E 70 057605
[13] Ran L, Huangfu J, Chen H, Li Y, Zhang X, Chen K, Kong J A2004 Phys. Rev. B 70 073102
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[15] Zhou J F, Zhang L, Tuttle G, Koschny T, Soukoulis C M 2006Phys. Rev. B 73 041101
[16] Zhang S, Qu S B, Ma H, Xie F, Xu Z 2009 Acta Phys. Sin. 583961 (in Chinese) [张松, 屈绍波, 马华, 谢峰, 徐卓 2009 58 3961]
[17] Mary A, Rodrigo S G, Garcia-Vidal F J, Martin-Moreno L 2008Phys. Rev. Lett. 101 103902
[18] Menzel C, Paul T, Rockstuhl C, Pertsch T, Tretyakov S, Lederer F2010 Phys. Rev. B 81 035320
[19] Wang H X, Lü Y H, Zhang H X 2011 Acta Phys. Sin. 60 034101(in Chinese) [王海侠, 吕英华, 张洪欣 2011 60 034101]
[20] Ziolkowski R W 2003 IEEE Trans. Ante. Prop. 51 1516
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[1] Veselago V G 1968 Sov. Phys . Usp. 10 509
[2] Pendry J B, Holden A J, Stewart W J, Youngs I 1996 Phys. Rev.Lett. 76 4773
[3] Smith D R, Vier D C, Padilla W J 1999 Appl. Phys. Lett. 75 1425
[4] Shi H Y, Jiang Y Y, Sun X D, Guo R H, Zhao Y P 2005 Chin.Phys. 14 1571
[5] Jiang T, Chen Y, Feng Y J 2006 Chin. Phys. 15 1154
[6] Zhang H X, Bao Y F, Lu Y H, Chen T M, Wang H X 2008 Chin.Phys. B 17 164
[7] Zhuo S C, Yan C C 2010 Acta Phys. Sin. 59 360 (in Chinese) [卓士创, 闫长春 2010 59 360]
[8] Zang H X, Zhao L, Lu Y H 2009 J. Nonlinear Opt. Phys. Mater.18 441
[9] Zang H X, Zhao L, Lu Y H 2010 Chin. J. Phys. 48 103
[10] Sulaiman A A, Nasaruddin A S, Jusoh M 2010 Eur. J. Sci. Res.44 493
[11] Grzegorczyk T M, Moss C D, Lu Jie, Chen X D, Pacheco Jr J,Kong J A 2005 IEEE Trans. Microwave Theory Tech. 53 2956
[12] Chen H S, Ran L X, Huangfu J T, Zhang X M, Chen K S 2004Phys. Rev. E 70 057605
[13] Ran L, Huangfu J, Chen H, Li Y, Zhang X, Chen K, Kong J A2004 Phys. Rev. B 70 073102
[14] Liu Y H, Luo C R, Zhao X P 2007 Acta Phys. Sin. 56 5883 (inChinese) [刘亚红, 罗春荣, 赵晓鹏 2007 56 5883]
[15] Zhou J F, Zhang L, Tuttle G, Koschny T, Soukoulis C M 2006Phys. Rev. B 73 041101
[16] Zhang S, Qu S B, Ma H, Xie F, Xu Z 2009 Acta Phys. Sin. 583961 (in Chinese) [张松, 屈绍波, 马华, 谢峰, 徐卓 2009 58 3961]
[17] Mary A, Rodrigo S G, Garcia-Vidal F J, Martin-Moreno L 2008Phys. Rev. Lett. 101 103902
[18] Menzel C, Paul T, Rockstuhl C, Pertsch T, Tretyakov S, Lederer F2010 Phys. Rev. B 81 035320
[19] Wang H X, Lü Y H, Zhang H X 2011 Acta Phys. Sin. 60 034101(in Chinese) [王海侠, 吕英华, 张洪欣 2011 60 034101]
[20] Ziolkowski R W 2003 IEEE Trans. Ante. Prop. 51 1516
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