Experimental Study on Split-Ring Resonators with Different Slit Widths


Metamaterial one-dimensional periodic structures are composed of split-ring resonators, which can display electric permittivity and magnetic permeability simultaneously negative, are studied experimentally. In the present study, each resonator is made up of two concentric circular copper rings patterned on a substrate of kapton, with slits diametrically opposite each other and with the line of the splits along the longitudinal direction of the periodic array containing seven split rings evenly spaced. The experiments consist in inserting the metamaterial slab into a square waveguide of side length 6 mm, corresponding to a cutoff frequency of 25 GHz. Transmission bands due to magnetic and electrical responses are identified for slits with aperture widths of 1 mm and 2 mm, centered at 5.67 and 6.12 GHz frequencies, respectively, values well below the 25 GHz frequency cutoff, so characterizing a medium with negative permeability and permittivity.

Share and Cite:

P. Castro, J. Barroso and J. Neto, "Experimental Study on Split-Ring Resonators with Different Slit Widths," Journal of Electromagnetic Analysis and Applications, Vol. 5 No. 9, 2013, pp. 366-370. doi: 10.4236/jemaa.2013.59058.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] J. J. Barroso, P. J. Castro and J. P. Leite Neto, “Experiments on Wave Propagation at 6.0 GHz in a Left-Handed Waveguide,” Microwave and Optical Technology Letters, Vol. 52, No. 10, 2010, pp. 2175-2178. doi:10.1002/mop.25435
[2] R. Marqués, J. Martel, F. Mesa and F. Medina, “Left-Handed-Media Simulation and Transmission of EM Waves in Subwavelength Split-Ring-Resonator-Loaded Metallic Waveguides”, Physical Review Letters, Vol. 89, No. 18, 2002, pp. 183901-183904. doi:10.1103/PhysRevLett.89.183901
[3] H. O. Moser, B. D. F. Case, O. Wilhelm and B. T. Saw, “Terahertz Response of a Microfabricated Rod-Split-Split-Ring-Resonator Electromagnetic Material,” Physical Review Letters, Vol. 94, No. 6, 2005, pp. 063901063904. doi:10.1103/PhysRevLett.94.063901
[4] J. B. Pendry, A. J. Holden, D. J. Robbins and W. J. Stewart, “Magnetism from Conductors and Enhanced Nonlinear Phenomena,” IEEE Transactions on Microwave Theory and Tecnique, Vol. 47, No. 11, 1999, pp. 2075-2084. doi:10.1109/22.798002
[5] W. C. Chew, “Some Reflections on Double Negative Materials,” Progress in Electromagnetics Research, Vol. 51, No. 1, 2005, pp. 1-26. doi:10.2528/PIER04032602
[6] J. Pendry, “Manipulating the Near Field with Metamaterials,” Optics and Photonic News, Vol. 15, No. 9, 2004, pp. 32-37. doi:10.1364/OPN.15.9.000032
[7] D. Smith, J. Pendry and M. Wiltshire, “Metamaterials and Negative Refraction Index,” Science, Vol. 305, No. 6, 2004, pp. 788-792.
[8] S. A. Ramakrishna, “Physics of Negative Refractive Index Materials,” Reports on Progress in Physics, Vol. 68, No. 2, 2005, pp. 449-521. doi:10.1088/0034-4885/68/2/R06
[9] E. Ozbay, K. Guven and K. Aydin, “Metamaterials with Negative Permeability and Negative Refractive Index: Experiments and Simulations,” Journal of Optics A: Pure and Applied Optics, Vol. 9, No. 9, 2007, pp. S301-S307.
[10] D. R. Smith, W. J. Padilla, D. C. Vier, S. C. Nemat-Nasser and S. Schultz, “Composite Medium with Simultaneously Negative Permeability and Permittivity,” Physical Review Letters, Vol. 84, No. 18, 2000, pp. 4184-4187. doi:10.1103/PhysRevLett.84.4184
[11] K. Aydin and E. Ozbay, “Identifying Magnetic Response of Split-Ring Resonators at Microwave Frequencies,” Opto-Electronics Review, Vol. 14, No. 3, 2006, pp. 193-199. doi:10.2478/s11772-006-0025-x
[12] K. Aydin, I. Bulu, K. Guven, M. Kafesaki, C. M. Soukoulis and E. Ozbay. “Investigation of Magnetic Resonances for Different Split-Ring Resonators Parameters and Designs,” New Journal of Physics, Vol. 7, No. 168, 2005, pp. 1-15. doi:10.1088/1367-2630/7/1/168
[13] N. Katsarakis, T. Koschny, M. Kafesaki, E. N. Economou and C. M. Soukoulis, “Electric Coupling to the Magnetic Resonance of Split Ring Resonators,” Applied Physics Letters, Vol. 84, No. 15, 2004, pp. 2943-2945. doi:10.1063/1.1695439
[14] K. Aydin and E. Ozbay, “Experimental and Numerical Analyses of the Resonances of Split Ring Resonators,” Physica Status Solidi (b), Vol. 244, No. 4, 2007, pp. 1197-1201. doi:10.1002/pssb.200674506
[15] K. Aydin, K. Guven, M. Kafesaki, L. Zhang, C. Soukoulis, E. Ozbay, “Experimental Observation of True Left-Handed Transmission Peaks in Metamaterials,” Optics Letters, Vol. 29, No. 22, 2004, pp. 2623-2625. doi:10.1364/OL.29.002623
[16] J. J. Barroso, P. J. Castro and J. P. Leite Neto, “Microwave Propagation Experiments on a Waveguide Loaded by an Array of Split-Ring Resonators,” Proceedings of SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, Natal, 29 October-1 November 2011, pp. 527-532. doi:10.1109/IMOC.2011.6169326

Copyright © 2021 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.