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Progress In Electromagnetics Research
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INVESTIGATION OF BANDWIDTH ENHANCEMENT IN VOLUMETRIC LEFT-HANDED METAMATERIALS USING FRACTALS

By T. M. De la Mata Luque, N. R. K. Devarapalli, and C. G. Christodoulou

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Abstract:
Volumetric left-handed metamaterials made up of an array of split-ring resonators (SRRs) and wires exhibit negative index of refraction in a very narrow bandwidth due to the resonant nature of SRRs. We investigate the possible bandwidth enhancement by adding resonances to the system using fractals. The operating bandwidth of the system is increased when the additional resonances are placed close enough to each other. The SierpiƄski-carpet fractal pattern is chosen as the distribution for the SRRs. The principle is demonstrated through simulations, and prototypes are fabricated and tested to verify consistency with simulations.

Citation:
T. M. De la Mata Luque, N. R. K. Devarapalli, and C. G. Christodoulou, "Investigation of Bandwidth Enhancement in Volumetric Left-Handed Metamaterials Using Fractals," Progress In Electromagnetics Research, Vol. 131, 185-194, 2012.
doi:10.2528/PIER12071602
http://www.jpier.org/PIER/pier.php?paper=12071602

References:
1. Smith, D. R., W. J. Padilla, D. C. Vier, S. C. Nemat-Nasser, and S. Schultz, "Composite medium with simultaneously negative permeability and permittivity," Phys. Rev. Lett., Vol. 84, No. 18, 4184-4187, May 2000.
doi:10.1103/PhysRevLett.84.4184

2. Shelby, R. A., D. R. Smith, and S. Schultz, "Experimental verification of a negative index of refraction," Science, Vol. 292, No. 5514, 77-79, Feb. 2001.
doi:10.1126/science.1058847

3. Pendry, J. B., "Extremely low frequency plasmons in metallic mesostructures," Phys. Rev. Lett., Vol. 76, No. 25, 4773-4776, Jun. 1996.
doi:10.1103/PhysRevLett.76.4773

4. Pendry, J. B., A. J. Holden, D. J. Robbins, and W. J. Stewart, "Magnetism from conductors and enhanced nonlinear phenomena," IEEE Trans. Microwave Theory Tech., Vol. 47, No. 11, 2075-2084, Nov. 1999.
doi:10.1109/22.798002

5. Wu, Q., M. Wu, F. Meng, J. Wu, and L. Li, "Modeling the effects of an individual SRR by equivalent circuit method," IEEE AP-S Int. Symp. Dig., 631-634, Jul. 2005.

6. Yasar-Orten, P., E. Ekmekci, and G. Turhan-Sayan, Equivalent circuit models for split-ring resonator arrays, PIERS Proceedings, 534-537, Cambridge, USA, Jul. 5--8, 2010.

7. Aydin, K., I. Bulu, K. Guven, M. Kafesaki, C. M. Soukoulis, and E. Ozbay, "Investigation of magnetic resonances for different split-ring resonator parameters and designs," New J. Phys., Vol. 7, No. 168, 1-15, Aug. 2005.

8. Chen, J.-Y., W.-L. Chen, J.-Y. Yeh, L.-W. Chen, and C.-C. Wang, "Comparative analysis of split-ring resonators for tunable negative permeability metamaterials based on anisotropic dielectric substrates," Progress In Electromagnetics Research M, Vol. 10, 25-38, 2009.
doi:10.2528/PIERM09110507

9. Scheuer, J., "Ultra-high enhancement of the field concentration in split ring resonators by azimuthally polarized excitation," Opt. Express, Vol. 19, No. 25, 25454-25464, Dec. 2011.
doi:10.1364/OE.19.025454

10. Penciu, R. S., K. Aydin, M. Kafesaki, T. Koschny, E. Ozbay, E. N. Economou, and C. M. Soukoulis, "Multi-gap individual and coupled split-ring resonator structures," Opt. Express, Vol. 16, No. 22, 18131-18144, Oct. 2008.
doi:10.1364/OE.16.018131

11. Aydin, K. and E. Ozbay, "Experimental investigation of reflection characteristics of left-handed metamaterials in free space," IET Microw. Antennas Propag., Vol. 1, No. 1, 89-93, Feb. 2007.
doi:10.1049/iet-map:20050301

12. Papasimakis, N., V. A. Fedotov, Y. H. Fu, D. P. Tsai, and N. I. Zheludev, "Coherent and incoherent metamaterials and order-disorder transitions," Phys. Rev. B, Vol. 80, 041102, 2009.
doi:10.1103/PhysRevB.80.041102

13. Aydin, K. and K. Guven, "Effect of disorder on magnetic resonance band gap of split-ring resonator structures," Opt. Express, Vol. 12, No. 24, 5896-5901, Nov. 2004.
doi:10.1364/OPEX.12.005896

14. Gay-Balmaz, P. and O. Martin, "Electromagnetic resonances in individual and coupled slit-ring resonators," J. Appl. Phys., Vol. 92, No. 5, 2929-2936, Sep. 2002.
doi:10.1063/1.1497452

15. Carbonell, J., E. Lheurette, and D. Lippens, "From rejection to transmission with stacked arrays of split ring resonators," Progress In Electromagnetics Research, Vol. 112, 215-224, 2011.


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