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A method of designing left-handed metamaterials based on inter-unit-cell coupling was proposed in this paper. A theoretical model was established using equivalent circuit theory. By properly setting the geometrical parameters of adjacent unit cells, the electric resonance frequency can be made equal to the magnetic resonance frequency. Thus, the left-handed bandwidth reaches its maximum. A typical left-handed metamaterial based on inter-unit-cell coupling was fabricated and tested. The experimental results show that the test sample has equal electric and magnetic resonance frequencies and the left-handed bandwidth is 24 GHz. This verifies the design method proposed in this paper.
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Keywords:
- left-handed metamaterials /
- inter-unit-cell couplings /
- equal resonance frequencies /
- broadband
[1] ［1］Pendry J B, Holden A J, Robbins D J, Stewart W J 1999 IEEE Trans. Microwave Theory Techn. 47 2075
[2] ［2］Smith D R, Padilla W J, Vier D C, Nemat-Nasser S C, Schultz S 2000 Phys. Rev. Lett. 84 4184
[3] ［3］Pendry J B 2000 Phys. Rev. Lett. 85 3966
[4] ［4］Ma H, Qu S B, Xu Z, Wang J F 2008 Opt. Express 16 15449
[5] ［5］Zhou H, Pei Z B, Qu S B, Zhang S, Wang J F, Li Q, Xu Z 2009 J. Electromagn. Waves Appl. 23 953
[6] ［6］Ma H, Qu S B, Xu Z, Zhang J Q, Chen B W, Wang J F 2008 Phys. Rev. A 78 036608
[7] ［7］Zhang F L, Zhao X P 2007 Acta Phys. Sin. 56 4661 (in Chinese) ［张富利、赵晓鹏 2007 56 4661］
[8] ［8］Zheng Q, Zhao X P, Fu Q H, Zhao Q, Kang L, Li M M 2005 Acta Phys. Sin. 54 5683 (in Chinese)［郑晴、赵晓鹏、付全红、赵乾、康雷、李明明 2005 54 5683］
[9] ［9］Cai X B, Zhou X M, Hu G K 2006 Chin. Phys. Lett. 23 348
[10] ］Liu R P, Degiron A, Mock J J, Smith D R 2007 Appl.Phys.Lett. 90 263504
[11] ］Wang J F, Qu S B, Xu Z, Zhang J Q, Yang Y M, Ma H 2008 Acta Phys. Sin. 57 5015 (in Chinese)［王甲富、屈绍波、徐卓、张介秋、杨一鸣、马华 2008 57 5015］
[12] ］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］
[13] ］Wang D X, Ran L X, Chen H S, Mu M K, Kong J A, Wu B I 2007 Appl. Phys. Lett. 90 254103
[14] ］Huangfu J T, Ran L X, Chen H S 2004 Appl. Phys. Lett. 84 1537
[15] ］Koschny T, Markos P, Economou E N, Smith D R, Vier D C, Soukoulis C M 2005 Phys. Rev. B 71 245105
[16] ］Chen H S, Zhang J J, Bai Y, Luo Y, Ran L X, Jiang Q, Kong J A 2006 Opt. Express 14 12944
[17] ］Koschny T, Markos P, Smith D R, Soukoulis C M 2003 Phys. Rev. E 68 065602
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[1] ［1］Pendry J B, Holden A J, Robbins D J, Stewart W J 1999 IEEE Trans. Microwave Theory Techn. 47 2075
[2] ［2］Smith D R, Padilla W J, Vier D C, Nemat-Nasser S C, Schultz S 2000 Phys. Rev. Lett. 84 4184
[3] ［3］Pendry J B 2000 Phys. Rev. Lett. 85 3966
[4] ［4］Ma H, Qu S B, Xu Z, Wang J F 2008 Opt. Express 16 15449
[5] ［5］Zhou H, Pei Z B, Qu S B, Zhang S, Wang J F, Li Q, Xu Z 2009 J. Electromagn. Waves Appl. 23 953
[6] ［6］Ma H, Qu S B, Xu Z, Zhang J Q, Chen B W, Wang J F 2008 Phys. Rev. A 78 036608
[7] ［7］Zhang F L, Zhao X P 2007 Acta Phys. Sin. 56 4661 (in Chinese) ［张富利、赵晓鹏 2007 56 4661］
[8] ［8］Zheng Q, Zhao X P, Fu Q H, Zhao Q, Kang L, Li M M 2005 Acta Phys. Sin. 54 5683 (in Chinese)［郑晴、赵晓鹏、付全红、赵乾、康雷、李明明 2005 54 5683］
[9] ［9］Cai X B, Zhou X M, Hu G K 2006 Chin. Phys. Lett. 23 348
[10] ］Liu R P, Degiron A, Mock J J, Smith D R 2007 Appl.Phys.Lett. 90 263504
[11] ］Wang J F, Qu S B, Xu Z, Zhang J Q, Yang Y M, Ma H 2008 Acta Phys. Sin. 57 5015 (in Chinese)［王甲富、屈绍波、徐卓、张介秋、杨一鸣、马华 2008 57 5015］
[12] ］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］
[13] ］Wang D X, Ran L X, Chen H S, Mu M K, Kong J A, Wu B I 2007 Appl. Phys. Lett. 90 254103
[14] ］Huangfu J T, Ran L X, Chen H S 2004 Appl. Phys. Lett. 84 1537
[15] ］Koschny T, Markos P, Economou E N, Smith D R, Vier D C, Soukoulis C M 2005 Phys. Rev. B 71 245105
[16] ］Chen H S, Zhang J J, Bai Y, Luo Y, Ran L X, Jiang Q, Kong J A 2006 Opt. Express 14 12944
[17] ］Koschny T, Markos P, Smith D R, Soukoulis C M 2003 Phys. Rev. E 68 065602
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