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We report on the design, the fabrication and the measurement of a microwave dual band absorber in microwave regime. The single unit cell consists of two closed ring resonators and a metallic ground plane separated by an FR4 layer. Experimental results show that the absorber has two distinctive absorption peaks at frequencies 4.06 GHz and 6.66 GHz with absorptions 99.60% and 95.83%, respectively, and the absorptivity drops in a wide range of incident angle. Fourfold rotational symmetry of the geometry makes the absorber insensitive to transverse electric and transverse magnetic polarization. The dual band absorber is a promising candidate as absorbing elements in multi-frequency imaging and thermal detection, due to its multi-band absorption performance, polarization-insensitivity, and wide angle of incidence.
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Keywords:
- metamaterial /
- absorber
[1] Diem M, Koschny T, Soukoulis C M 2009 Phys. Rev. B 79 33101
[2] Liu N, Mesch M, Weiss T, Hentschel M, Giessen H 2010 NanoLett. 10 2342
[3] Liu X L, Starr T, Starr A F, Padilla W J 2010 Phys. Rev. Lett. 104207403
[4] Noor A, Hu Z 2010 Iet. Microw. Antenna P 4 667
[5] Gu C, Qu S B,Pei Z B, Xu Z, Liu J, Gu W 2011 Acta Phys. Sin.60 027801 (in Chinese) [顾超, 屈绍波, 裴志斌, 徐卓,刘嘉, 顾巍 2011 60 027801]
[6] Cheng Y Z, Xiao T, Yang H L, Xiao B X 2010 Acta Phys. Sin. (inChinese) 59 5715 [程用志, 肖婷, 杨河林, 肖柏勋2010 59 5715]
[7] Fan J, Cai G Y 2010 Acta Phys. Sin. 59 6084 (in Chinese) [樊京, 蔡广宇 2011 59 6084]
[8] Zhang Y P, Zhao X P, Bao S, Luo C R 2010 Acta Phys. Sin. 596078 (in Chinese) [张燕萍, 赵晓鹏, 保石, 罗春荣 2010 59 6084]
[9] Zhu B, Feng Y J, Zhao J M, Huang C, Jiang T A 2010 Appl. Phys.Lett. 97 51906
[10] Landy N I, Sajuyigbe S, Mock J J, Smith D R, Padilla W J 2008Phys. Rev. Lett. 100 207402
[11] Hao J M,Wang J, Liu X L, PadillaWJ, Zhou L, QiuM2010 Appl.Phys. Lett. 96 251104
[12] Tao H, Bingham C M, Pilon D, Fan K B, Strikwerda A C, ShrekenhamerD, PadillaWJ, Zhang X, Averitt R D 2010 J. Phys. D: Appl.Phys. 43 225102
[13] Wen Q Y, Zhang H W, Xie Y S, Yang Q H, Liu Y L 2009 Appl.Phys. Lett. 95 241111
[14] Padilla W J, Taylor A J, Highstrete C, Lee M, Averitt R D 2006Phys. Rev. Lett. 96 107401
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[1] Diem M, Koschny T, Soukoulis C M 2009 Phys. Rev. B 79 33101
[2] Liu N, Mesch M, Weiss T, Hentschel M, Giessen H 2010 NanoLett. 10 2342
[3] Liu X L, Starr T, Starr A F, Padilla W J 2010 Phys. Rev. Lett. 104207403
[4] Noor A, Hu Z 2010 Iet. Microw. Antenna P 4 667
[5] Gu C, Qu S B,Pei Z B, Xu Z, Liu J, Gu W 2011 Acta Phys. Sin.60 027801 (in Chinese) [顾超, 屈绍波, 裴志斌, 徐卓,刘嘉, 顾巍 2011 60 027801]
[6] Cheng Y Z, Xiao T, Yang H L, Xiao B X 2010 Acta Phys. Sin. (inChinese) 59 5715 [程用志, 肖婷, 杨河林, 肖柏勋2010 59 5715]
[7] Fan J, Cai G Y 2010 Acta Phys. Sin. 59 6084 (in Chinese) [樊京, 蔡广宇 2011 59 6084]
[8] Zhang Y P, Zhao X P, Bao S, Luo C R 2010 Acta Phys. Sin. 596078 (in Chinese) [张燕萍, 赵晓鹏, 保石, 罗春荣 2010 59 6084]
[9] Zhu B, Feng Y J, Zhao J M, Huang C, Jiang T A 2010 Appl. Phys.Lett. 97 51906
[10] Landy N I, Sajuyigbe S, Mock J J, Smith D R, Padilla W J 2008Phys. Rev. Lett. 100 207402
[11] Hao J M,Wang J, Liu X L, PadillaWJ, Zhou L, QiuM2010 Appl.Phys. Lett. 96 251104
[12] Tao H, Bingham C M, Pilon D, Fan K B, Strikwerda A C, ShrekenhamerD, PadillaWJ, Zhang X, Averitt R D 2010 J. Phys. D: Appl.Phys. 43 225102
[13] Wen Q Y, Zhang H W, Xie Y S, Yang Q H, Liu Y L 2009 Appl.Phys. Lett. 95 241111
[14] Padilla W J, Taylor A J, Highstrete C, Lee M, Averitt R D 2006Phys. Rev. Lett. 96 107401
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