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In this paper, two kinds of ring-type microwave electric resonant structures were proposed, which were appropriately assembled with metal wires to form electromagnetic coupling units. The coupled structures have resonance response to the incident electromagnetic wave, and absorb the electric and magnetic fields strongly. We simulated these two kinds of coupled structures, and then optimized the simulation results to achieve the best absorption properties. The electromagnetic properties (the reflection coefficients S11 and the transmission coefficients S21) of metamaterial absorber sample were measured using free space method in microwave frequency from 8 to 12 GHz. At 10.7 GHz and 10.07 GHz, the absorptivity reaches 95% and 98%, respectively.
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Keywords:
- coupling unit /
- absorptivity /
- impedance matched
[1] Kock W E 1948 Bell. Syst. Tech. J 27 58
[2] Veselago V G 1968 Sov .Phys. Usp. 10 509
[3] Xiao S S, Shen L F, He S L 2004 IEEE Photonics Technology Letters 16 171
[4] Leonhardt U 2006 Science 312 1777
[5] Akalin T, Danglot J, Vanbesien O, Lippens D A 2002 IEEE Microwave and Wireless Components Letters 12 48
[6] Landy N I, Sajuyigbe S, Mock J, Smith D R, Padilla W J 2008 Phys. Rev. Lett. 100 207402
[7] 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 57 7200]
[8] Jia H Y, Gao J S, Feng X G, Sun L C 2009 Acta Phys. Sin. 58 506(in Chinese) [贾宏燕、高劲松、冯晓国、孙连春 2009 58 506]
[9] Avitzour Y, Yaroslav A, Urzhumov, Shvets G 2009 Phys. Rev. B 79 045131
[10] Tao H, Landy N I, Bingham C M, Zhang X, Averitt R D, Padilla W J 2008 Optics Express 16 10
[11] Landy N I, Bingham C M, Tyler T, Jokerst N, Smith D R, Padilla W J 2009 Phys. Rev. B 79 125104
[12] Smith D R, Pendry J B 2006 Opt. Soc. Am. B 23 391
[13] Smith D R, Vier D C, Koschny T, Soukoulis C M 2005 Phys. Rev. E 71 036617
[14] Schuring D, Mock J J, Smith D R 2006 Appl. Phys. Lett. 88 041109
[15] Zhang S Q, Shi Y L, Huang C G, Lian C C 2007 Acta Phys. Sin. 56 5508 (in Chinese) [张拴勤、石云龙、黄长庚、连长春 2007 56 5508]
[16] 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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[1] Kock W E 1948 Bell. Syst. Tech. J 27 58
[2] Veselago V G 1968 Sov .Phys. Usp. 10 509
[3] Xiao S S, Shen L F, He S L 2004 IEEE Photonics Technology Letters 16 171
[4] Leonhardt U 2006 Science 312 1777
[5] Akalin T, Danglot J, Vanbesien O, Lippens D A 2002 IEEE Microwave and Wireless Components Letters 12 48
[6] Landy N I, Sajuyigbe S, Mock J, Smith D R, Padilla W J 2008 Phys. Rev. Lett. 100 207402
[7] 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 57 7200]
[8] Jia H Y, Gao J S, Feng X G, Sun L C 2009 Acta Phys. Sin. 58 506(in Chinese) [贾宏燕、高劲松、冯晓国、孙连春 2009 58 506]
[9] Avitzour Y, Yaroslav A, Urzhumov, Shvets G 2009 Phys. Rev. B 79 045131
[10] Tao H, Landy N I, Bingham C M, Zhang X, Averitt R D, Padilla W J 2008 Optics Express 16 10
[11] Landy N I, Bingham C M, Tyler T, Jokerst N, Smith D R, Padilla W J 2009 Phys. Rev. B 79 125104
[12] Smith D R, Pendry J B 2006 Opt. Soc. Am. B 23 391
[13] Smith D R, Vier D C, Koschny T, Soukoulis C M 2005 Phys. Rev. E 71 036617
[14] Schuring D, Mock J J, Smith D R 2006 Appl. Phys. Lett. 88 041109
[15] Zhang S Q, Shi Y L, Huang C G, Lian C C 2007 Acta Phys. Sin. 56 5508 (in Chinese) [张拴勤、石云龙、黄长庚、连长春 2007 56 5508]
[16] 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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