volume | PIER Journals

Abstract

In this paper, impedance modeling is presented for analyzing the metallic loading effect on the performance of a split ring resonator (SRR) antenna in (2.4-2.5)/(5.1-5.8) GHz frequency bands. Two SRR antennas of rectangular and circular rings have been designed on ANSYS HFSS software, and their return losses are obtained as -16.63/-25.26 dB at 2.7/5.8 GHz and -10/-20.09 dB at 2.2/5.2 GHz, respectively. Then the metallic loadings are incorporated in both rectangular and circular SRR antennas, which move the peak resonant frequency to 2.5/5.1 GHz with simulated return losses of -14.39/-22 dB for rectangular SRR antenna and to 2.6/5.1 GHz with -17.64/-11.10 dB, respectively for circular SRR antenna. Then, to analyze the effect of metallic loading on SRR antenna performance, a set of equations are derived from the equivalent circuit of the SRR antenna without and with metallic loading to evaluate the lumped elements values. The circular SRR antenna with metallic loading is fabricated, and its measured return loss is found to be -17.94/-15.76 dB at 2.415/5.23 GHz. The lumped component values are calculated from the measured return loss using the derived equations, and these values are compared with those obtained from the simulated return loss for circular SRR antenna. A shift in resonant frequencies towards the desired bands is observed due to the inductive effect of the metallic loading. The axial ratio values higher than 15 dB confirm that the proposed SRR antennas with metallic loadings are linearly polarised. The 2D patterns in E-plane and H-plane, as well as 3D far-field patterns, confirm an omnidirectional radiation pattern for circular SRR antenna, which is useful for WLAN applications.

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

2. Smith, D. R., D. C. Vier, Th. Koschny, and C. M. Soukoulis, "Electromagnetic parameter retrieval from inhomogeneous metamaterials," Phys. Rev. E, Vol. 71, No. 3, 036617, 2005.
doi:10.1103/PhysRevE.71.036617 Google Scholar

3. Marques, R., F. Mesa, J. Martel, and F. Medina, "Comparative analysis of edge- and broadside-coupled split ring resonators for metamaterial design --- Theory and experiments," IEEE Trans. Antennas Propagat., Vol. 51, No. 10, 2572-2581, 2003.
doi:10.1109/TAP.2003.817562 Google Scholar

4. Bonache, J., I. Gil, J. Garcia-Garcia, and F. Martin, "Novel microstrip bandpass filters based on complementary split-ring resonators," IEEE Trans. Microwave Theory Techn., Vol. 54, No. 1, 265-271, 2006.
doi:10.1109/TMTT.2005.861664 Google Scholar

5. Gil, M., J. Bonache, J. Selga, J. Garcia-Garcia, and F. Martin, "High-pass filters implemented by composite right/left handed (CRLH) transmission lines based on complementary split rings resonators (CSRRs)," PIERS Online, Vol. 3, No. 3, 251-253, 2007.
doi:10.2529/PIERS060802072849 Google Scholar

6. Martin, F., F. Falcone, J. Bonache, R. Marques, and M. Sorolla, "Miniaturized coplanar waveguide stop band filters based on multiple tuned split-ring resonators," IEEE Microw. Wireless Compon. Lett., Vol. 13, No. 12, 511-513, 2003.
doi:10.1109/LMWC.2003.819964 Google Scholar

7. Saadoun, M. M. I. and N. Engheta, "A reciprocal phase shifter using novel pseudochiral or ω medium," Microw. Opt. Technol. Lett., Vol. 5, No. 4, 184-188, 1992.
doi:10.1002/mop.4650050412 Google Scholar

8. Antoniades, M. A. and G. V. Eleftheriades, "A broadband series power divider using zero-degree metamaterial phase-shifting lines," IEEE Microw. Wireless Compon. Lett., Vol. 15, No. 11, 808-810, 2005.
doi:10.1109/LMWC.2005.859007 Google Scholar

9. Ziolkowski, R. W. and A. D. Kipple, "Application of double negative materials to increase the power radiated by electrically small antennas," IEEE Trans. Antennas Propagat., Vol. 51, No. 10, 2626-2640, 2003.
doi:10.1109/TAP.2003.817561 Google Scholar

10. Arnedo, I., J. Illescas, M. Flores, T. Lopetegi, M. A. G. Laso, F. Falcone, J. Bonache, J. García- García, F. Martín, J. A. Marcotegui, R. Marqués, and M. Sorolla, "Forward and backward leaky-wave radiation in split-ring-resonator-based metamaterials," IET Microw. Antennas Propag., Vol. 1, No. 1, 65, 2007.
doi:10.1049/iet-map:20050320 Google Scholar

11. Duk Jang, K., J. Hee Kim, D. Hyun Lee, and W. S. Park, "Compact resonant antenna based on composite right/left-handed transmission line with a magneto-dielectric material," Microw. Opt. Technol. Lett., Vol. 51, No. 8, 1994-1997, 2009.
doi:10.1002/mop.24490 Google Scholar

12. Kim, I. K., H.Wang, S. J.Weiss, and V. V. Varadan, "Embedded wideband metaresonator antenna on a high-impedance ground plane for vehicular applications," IEEE Trans. Veh. Technol., Vol. 61, No. 4, 1665-1672, 2012.
doi:10.1109/TVT.2012.2189254 Google Scholar

13. Yu, Z., S. Mo, and Z. Long, "A novel UWB SRR antenna," 2011 IEEE International Symposium on Antennas and Propagation (APSURSI), 1486-1489, 2011. Google Scholar

14. Cumhur Basaran, S. and Y. E. Erdemli, "A dual-band split-ring monopole antenna for WLAN applications," Microw. Opt. Technol. Lett., Vol. 51, No. 11, 2685-2688, 2009.
doi:10.1002/mop.24708 Google Scholar

15. Cumhur Basaran, S., "A compact dual-wideband antenna based on complementary split-ring resonator," Microw. Opt. Technol. Lett., Vol. 54, No. 8, 1917-1920, 2012.
doi:10.1002/mop.26969 Google Scholar

16. Basaran, S. C. and K. Sertel, "Dual wideband CPW-fed monopole antenna with split-ring resonators," Microw. Opt. Technol. Lett., Vol. 55, No. 9, 2088-2092, 2013.
doi:10.1002/mop.27789 Google Scholar

17. Sehgal, P., K. Patel, and , "Dual-wideband CPW-fed monopole antenna with circular split-ring resonators," 7th International Conference on Signal Processing and Integrated Networks (SPIN), 1078-1083, Noida, India, 2020. Google Scholar

18. Saha, C., "On some studies with split ring resonators SRR of different geometrical shapes for metamaterial applications,", Ph.D. Thesis, University of Calcutta, India, 2012. Google Scholar

19. Naqui, J., M. Duran-Sindreu, and F. Martin, "Modeling split-ring resonator (SRR) and complementary split-ring resonator (CSRR) loaded transmission lines exhibiting cross-polarization effects," Antennas Wirel. Propag. Lett., Vol. 12, 178-181, 2013.
doi:10.1109/LAWP.2013.2245095 Google Scholar

20. Marwaha, A., "An accurate approach of mathematical modeling of SRR and SR for metamaterials," JESTR, Vol. 9, No. 6, 82-86, 2016.
doi:10.25103/jestr.096.11 Google Scholar

21. Sadiku, M. N. O., Elements of Electromagnetics, Oxford University Press, USA, 1995.

Dr. Puneet Sehgal

Prof. Kamlesh Patel