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A wide-band, polarization-insensitive and wide-angle metamaterial absorber based on loaded magnetic resonator is proposed. A single unit cell of the absorber is comprised of a magnetic resonator loaded with lumped elements, a substrate and a back metal board. Simulated absorbances of the one-dimensional-array absorber under loading and unloading conditions indicate that compared with under the unloading condition, the one-dimensional absorber under the loading condition can realize a wide-band absorption. Simulated absorbances of the one-dimensional-array absorber with lossy and loss-free substrates indicate that the power loss in the absorber results from lumped resistances in magnetic resonators, and is insensitive to the loss of the substrate. Simulated absorbances of the one-dimensional-array absorber with different lumped resistances and capacitances indicate that there exist optimal values for lumped resistances and capacitances, where the absorbance is highest and the bandwidth is widest. Simulated absorbances of the two-dimensional-array absorber under different polarization angles and different incident angles indicate that the absorber is polarization-insensitive and angle-wide.
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Keywords:
- magnetic resonator /
- lumped element /
- wide-band /
- metamaterial absorber
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[40] Avitzour Y, Urzhumov Y A, Shvets G 2009 Phys. Rev. B 79 045131
[41] -
[1] Caloz C, Itoh T 2006 Electromagnetic Metamaterials: Transmission Line Theory and Microwave Applications: The Engineering Approach (New Jersey: John Wiley Sons, Inc.) pp2,3
[2] Veselago V G 1968 Sov. Phys. Usp. 10 509
[3] [4] [5] Shelby R A, Smith D R, Schultz S 2001 Science 292 77
[6] Smith D R, Schurig D, Rosenbluth M, Schultz S, Ramakrishna S A, Pendry J B 2003 Appl. Phys. Lett. 82 1506
[7] [8] Schurig D, Mock J J, Justice B J, Cummer S A, Pendry J B, Starr A F, Smith D R 2006 Science 314 977
[9] [10] [11] Enoch S, Tayeb G, Sabouroux P, Gurin N, Vincent P 2002 Phys. Rev. Lett. 89 213902
[12] Liu L, He S 2004 Opt. Express 12 4835
[13] [14] [15] Colladey S, Tarot A C, Pouliguen P, Mahdjoubi K 2005 Microw. Opt. Techn. Lett. 44 546
[16] [17] Engheta N 2002 IEEE Antennas Wireless Propag. 1 10
[18] Marques R, Martel J, Mesa F, Medina F 2002 Phys. Rev. Lett. 89 183901
[19] [20] Al A, Bilotti F, Engheta N, Vegni L 2007 IEEE Trans. Antennas Propag. 55 882
[21] [22] [23] Ali A, Khan M A, Hu Z 2007 Electron. Lett. 43 528
[24] [25] Tseng C H,Chang C L 2008 IEEE Microwave. Wireless Compon. Lett. 18 25
[26] [27] Bonache J, Gil I, Garca G J, Martn F 2005 Electron. Lett. 41 810
[28] Pendry J B, Holden A J, Stewart W J, Youngs I 1996 Phys. Rev. Lett. 76 4773
[29] [30] [31] Pendry J B, Holden A J, Robbins D J, Stewart W J 1999 IEEE Trans. Microwave Theory Techn. 47 2075
[32] Landy N I, Sajuyigbe S, Mock J J, Smith D R, Padilla W J 2008 Phys. Rev. Lett. 100 207402
[33] [34] Tao H, Landy N I, Bingham C M, Zhan X, Averitt R D, Padilla W J 2008 Opt. Express 16 7181
[35] [36] [37] Landy N I, Bingham C M, Tyler T, Jokerst N, Smith D R, Padilla W J 2009 Phys. Rev. B 79 125104
[38] [39] Tao H, Bingham C M, Strikwerda A C, Pilon D, Shrekenhamer D, Landy N I, Fan K, Zhang X, Padilla W J, Averitt R D 2008 Phys. Rev. B 78 241103
[40] Avitzour Y, Urzhumov Y A, Shvets G 2009 Phys. Rev. B 79 045131
[41]
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