volume | PIER Journals

Abstract

In this paper, suppression of mutual coupling is achieved using compact waveguided metamaterials in between elements of a densely packed microstrip array. Both the E-plane internally folded complementary split ring resonator and the H-plane internally folded complementary split ring resonator are employed to reduce the mutual coupling between adjacent elements. Coupling suppression of 18 dB and 9 dB, for elements in the E-plane and H-plane, respectively, is demonstrated. Due to the compact size of the waveguided metamaterials, the edge-to-edge separation between elements is kept at only 0.093λ₀. With the same elements spacing, a 2×2 array is also simulated with compact WG-MTMs. The proposed structure reduces the array size and enables the implementation of compact Multiple-Input-Multiple-Output systems.

1. Ludwig, A., "Mutual coupling, gain and directivity of an array of two identical antennas," IEEE Transaction on Antennas and Propagation, Vol. 24, No. 6, 837-841, 1976.
doi:10.1109/TAP.1976.1141440 Google Scholar

2. Bait-Suwailam, M. M., O. F. Siddiqui, and O. M. Ramahi, "Mutual coupling reduction between microstrip patch antennas using slotted-complementary split-ring resonators," IEEE Antennas and Wireless Propagation Letter, Vol. 9, 876-878, 2010.
doi:10.1109/LAWP.2010.2074175 Google Scholar

3. Nikolic, M., A. Djordjevic, and A. Neorai, "Microstrip antennas with suppressed radiation in horizontal directions and reduced coupling," IEEE Transaction on Antennas and Propagation, Vol. 52, No. 11, 3469-3476, 2005.
doi:10.1109/TAP.2005.858847 Google Scholar

4. Yang, F. and Y. Rahmat-Samii, "Microstrip antennas integrated with electromagnetic band-gap (EBG) structures: A low mutual coupling design for array applications," IEEE Transaction on Antennas and Propagation, Vol. 51, No. 10, 2936-2946, 2003.
doi:10.1109/TAP.2003.817983 Google Scholar

5. Coulombe, M., S. F. Koodiani, and C. Caloz, "Compact elongated mushroom (EM)-EBG structure for enhancement of patch antenna array performances," IEEE Transaction on Antennas and Propagation, Vol. 58, No. 4, 1076-1086, 2010.
doi:10.1109/TAP.2010.2041152 Google Scholar

6. Assimonis, S. D., V. Y. Traianos, and S. A. Christos, "Computational investigation and design of planar EBG structures for coupling reduction in antenna applications," IEEE Transaction on Magnetics, Vol. 48, No. 2, 771-774, 2012.
doi:10.1109/TMAG.2011.2172680 Google Scholar

7. Farahani, H. S., M. Veysi, M. Kamyab, and A. Tadjalli, "Mutual coupling reduction in patch antenna arrays using a UC-EBG superstrate," IEEE Antennas and Wireless Propagation Letter, Vol. 9, 57-59, 2010.
doi:10.1109/LAWP.2010.2042565 Google Scholar

8. Chiu, C. Y., C. H. Cheng, R. D. Murch, and C. R. Rowell, "Reduction of mutual coupling between closely-packed antenna elements," IEEE Transaction on Antennas and Propagation, Vol. 55, No. 6, 1732-1738, 2007.
doi:10.1109/TAP.2007.898618 Google Scholar

9. Buell, K., H. Mosallaei, and K. Sarabandi, "Metamaterial insulator enabled superdirective array," IEEE Transaction on Antennas and Propagation, Vol. 55, No. 4, 1074-1085, 2007.
doi:10.1109/TAP.2007.893373 Google Scholar

10. Liu, R., X. M. Yang, J. G. Gollub, J. J. Mock, T. J. Cui, and D. R. Smith, "Gradient index circuit by waveguided metamaterials," Applied Physics Letter, Vol. 94, No. 7, 073506, 2009.
doi:10.1063/1.3081399 Google Scholar

11. Yang, X. M., Q. H. Sun, Y. Jing, Q. Cheng, X. Y. Zhou, H. W. Kong, and T. J. Cui, "Increasing the bandwidth of microstrip patch antenna by loading compact artificial magneto-dielectrics," IEEE Transaction on Antennas and Propagation, Vol. 59, No. 2, 373-378, 2011.
doi:10.1109/TAP.2010.2096388 Google Scholar

12. Yang, X. M., X. G. Liu, X. Y. Zhou, and T. J. Cui, "Reduction of mutual coupling between closely packed patch antennas using waveguided metamaterials," IEEE Antennas and Wireless Propagation Letter, Vol. 11, 389-391, 2012.
doi:10.1109/LAWP.2012.2193111 Google Scholar

13. Han, X., H. Hafdallah Ouslimani, T. Zhang, and A. C. Priou, "CSRRS for efficient reduction of the electromagnetic interferences and mutual coupling in microstrip circuits," Progress In Electromagnetics Research B, Vol. 42, 291-309, 2012.
doi:10.2528/PIERB12052406 Google Scholar

14. Xu, H. X., G. M. Wang, and M. Q. Qi, "Hilbert-shaped magnetic waveguided metamaterials for electromagnetic coupling reduction of microstrip antenna array," IEEE Transaction on Magnetics, Vol. 49, No. 4, 1526-1529, 2013.
doi:10.1109/TMAG.2012.2230272 Google Scholar

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

16. Schurig, D., J. J.Mock, and D. R. Smith, "Electric-field coupled resonators for negative permittivity metamaterials," Applied Physics Letter, Vol. 88, 041109, 2006.
doi:10.1063/1.2166681 Google Scholar

17. Wu, Q., P. Pan, F. Y. Meng, L. W. Li, and I. Wu, "A novel flat lens horn antenna designed based on zero refraction principle of metamaterials," Applied Physics A, Vol. 87, No. 2, 151-156, 2007.
doi:10.1007/s00339-006-3820-9 Google Scholar

18. Smith, D. R., J. GolIub, J. J. Mock, W. J. Padila, and D. Schurig, "Calculation and measurement of bianisotropy in a split ring resonator metamaterial," Journal of Applied Physics, Vol. 100, No. 19, 024507, 2006.
doi:10.1063/1.2218033 Google Scholar

19. Smith, D. R., S. Schultz, P. Markos, and C. M. Soukoulis, "Determination of negative permittivity and permeability of materials from reflection and transmission coefficients," Physics Rev. B, Vol. 65, 195104, 2002.
doi:10.1103/PhysRevB.65.195104 Google Scholar

20. Gu, S., J. P. Barrett, T. H. Hand, B. I. Popa, and S. A. Cummer, "A broadband low-reflection metamaterial absorber," Journal of Applied Physics, Vol. 108, No. 6, 064913, 2010.
doi:10.1063/1.3485808 Google Scholar

21. Hou, D. B., S. Xiao, B.-Z. Wang, L. Jiang, J. Wang, and W. Hong, "Elimination of scan blindness with compact defected ground structures in microstrip phased array," IET Microwaves, Antennas and Propagation, Vol. 3, No. 2, 269-275, 2009.
doi:10.1049/iet-map:20080037 Google Scholar

Dr. Zeeshan Qamar

Dr. Hyun Chang Park