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Multiband and broadband metamaterial absorbers have been proposed in the paper. The proposed absorbers are composed of metallic copper patterns on both sides of a dielectric layer. One side consists of metallic circular patches and metallic annular patches, and the other side is of metallic ground plane. Each distinct metallic circular patch unit cell or annular patch unit cell has one distinct resonant peak in a very narrow band, and these unit cells are independent of one an other. Therefore, combining two different unit cells which resonates at different frequencies can obtain dual-band absorber. Based on the theory, combining three different unit cells can obtain tri-band absorber, and combining four different unit cells can obtain the absorber which resonates at four different frequencies. In addition, the electric field distribution verifies that each distinct unit cell resonates at a different frequency. Broadband metamaterial absorber can be obtained according to the optimized combination of the different unit cells. Increasing the number of different unit cells broadens the frequency range when their resonances are closely packed together, thereby resulting in a broadband resonance.
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Keywords:
- absorber /
- metamaterial /
- multiband /
- broadband
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[7] Zhou X, Zhao X P 2007 Appl. Phys. Lett. 91 181908
[8] Fedotov V A, Mladyonov P L, Prosvirnin S L, Zheludev N I 2005 Phys. Rev. E 72 056613
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[28] He Y F, Gong R Z, Wang X, Zhao Q 2008 Acta Phys. Sin. 57 5261 (in Chinese) [何燕飞, 龚荣洲, 王鲜, 赵强 2008 57 5261]
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[30] Quan B G, Li C, Sui Q, Li J J, Liu W M, Li F, Gu C Z 2005 Chin. Phys. Lett. 22 1243
[31] Zhao X P, Zhao Q, Kang L, Song J, Fu Q H 2005 Phys. Lett. A 346 87
[32] Zhu W R, Zhao X P, Ji N 2007 Appl. Phys. Lett. 90 011911
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[1] Pendry J B, Holden A J, Stewart W J, Youngs I 1996 Phys. Rev. Lett. 76 4773
[2] Pendry J B, Holden A J, Robbins D J, Stewart W J 1999 IEEE Trans. Microw. Theory Tech. 47 2075
[3] Shelby R, Smith D R, Schultz S 2001 Science 292 77
[4] Chen H S, Ran L X, Huangfu J T, Zhang X M, Chen K S, Grzegorczyk T M, Kong J A 2004 Phys. Rev. E 70 057605
[5] Dolling G, Enkrich C, Wegener M Zhou J F Soukoulis C M, Linden S 2005 Opt. Lett. 30 3198
[6] Huangfu J, Ran L, Chen H, Zhang X, Chen K, Grzegorczyk T M, Kong J A 2004 Appl. Phys. Lett. 84 1357
[7] Zhou X, Zhao X P 2007 Appl. Phys. Lett. 91 181908
[8] Fedotov V A, Mladyonov P L, Prosvirnin S L, Zheludev N I 2005 Phys. Rev. E 72 056613
[9] Zhou X, Liu Y H, Zhao X P 2010 Appl. Phys. A 98 643
[10] Liu Y H, Luo C R, Zhao X P 2007 Acta Phys. Sin. 56 5883 (in Chinese) [刘亚红, 罗春荣, 赵晓鹏 2007 56 5883]
[11] Shalaev V M, Cai W, Chettiar U K, Yuan H K, Sarychev A K, Drachev V P, Kildishev A V 2005 Opt. Lett. 30 3356
[12] Landy N I, Sajuyigbe S, Mock J J, Smith D R, Padilla W J 2008 Phys. Rev. Lett. 100 207402
[13] Cheng Y, Yang H 2010 J. Appl. Phys. 108 034906
[14] Christopher M B, Tao H, Liu X, Averitt R D, Zhang X, Padilla W J 2008 Opt. Express 16 18565
[15] Li L, Yang Y, Liang C 2011 J. Appl. Phys. 110 063702
[16] Wen Q Y, Zhang H W, Xie Y S, Yang Q H, Liu Y L 2009 Appl. Phys. Lett. 95 241111
[17] Shen X P, Cui T J, Zhao J M, Ma H F, Jiang W X, Li H 2011 Opt. Express 19 9401
[18] Li H, Yuan L H, Zhou B, Shen X P, Cheng Q, Cui T J 2011 J. Appl. Phys. 110 014909
[19] Xu Y Q, Zhou P H, Zhang H B, Chen L, Deng L J 2011 J. Appl. Phys. 110 044102
[20] Gu S, Barrett J P, Hand T H, Popa B I, Cummera S A 2010 J. Appl. Phys. 108 064913
[21] Lee J, Lim S 2011 Electro. Lett. 47 8
[22] Ding F, Cui Y, Ge X, Jin Y, He S 2012 Appl. Phys. Lett. 100 103506
[23] Bao S, Luo C R, Zhang Y P, Zhao X P 2010 Acta Phys. Sin. 59 3187 (in Chinese) [保石, 罗春荣, 张燕萍, 赵晓鹏 2010 59 3187]
[24] Zhu W R, Zhao X P 2010 European Physical J. Appl.Phys. 50 21101
[25] Wang J, Chen Y, Hao J, Yan M, Qiu M 2011 J. Appl. Phys. 109 074510
[26] Lin C H, Chern R L, Lin H Y 2011 Opt. Express 19 415
[27] Sun L K, Cheng H F, Zhou Y J, Wang J, Pang Y Q 2011 Acta Phys. Sin. 60 108901 (in Chinese) [孙良奎, 程海峰, 周永江, 王军, 庞永强 2011 60 108901]
[28] He Y F, Gong R Z, Wang X, Zhao Q 2008 Acta Phys. Sin. 57 5261 (in Chinese) [何燕飞, 龚荣洲, 王鲜, 赵强 2008 57 5261]
[29] Wang X D, Ye Y H, Ma J, Jiang M P 2010 Chin. Phys. Lett. 27 094101
[30] Quan B G, Li C, Sui Q, Li J J, Liu W M, Li F, Gu C Z 2005 Chin. Phys. Lett. 22 1243
[31] Zhao X P, Zhao Q, Kang L, Song J, Fu Q H 2005 Phys. Lett. A 346 87
[32] Zhu W R, Zhao X P, Ji N 2007 Appl. Phys. Lett. 90 011911
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