volume | PIER Journals

Abstract

The next generation 4T4R Multiple Input Multiple Output (MIMO) antenna solution is gradually accepted by operators in many countries as a mainstream expansion to long term evolution (LTE) networks. Using limited spectrum and high capacity, operators have successfully adopted multi-sector 4T4R MIMO deployment and achieved a 70% increase in capacity without increasing spectrum, thus paving way for state of art next generation wireless networking environment requiring antennae that are robust, small size, lighter, preferably with circular polarization. MIMO antennae provide optimality by arresting multipath fade effect and ensuring data link that is reliable. MIMO realizes efficiency in mobility with increase in capacity of links and several sub-bandwidths using polarization diversity providing better cybersecurity. This work therefore is an investigation on a small size 4T4R MIMO antenna for the use in a sub-6 GHz new radio (NR) band in a fading environment with good inter element as well as radiation isolation compared with earlier research. A rectangular patch with loaded slots is designed to obtain small size. Stubs and parasitic elements are introduced between the elements for better mutual coupling performance. Performance of the antenna is stable, with the test results agreeing. The parametrics follow the coefficient of transmission isolation technique to obtain an optimal envelope correlation coefficient.

1. Ngo, H. Q., "MIMO: Fundamentals and system designs,", PhD Thesis, Department of Elect. Engg., Linköping University, Sweden, Sept. 2015.
doi:10.1109/MCOM.2007.344587

2. Dohler, M., S. McLaughlin, D. Laurenson, M. Beach, C. M. Tan, and A. H. Aghvami, "MIMO channel measurement and modeling," IEEE Communications Magazine, Vol. 45, No. 3, 85-92, Dec. 2007.
doi:10.1109/MCOM.2007.344588

3. Dohler, M., S. McLaughlin, and A. H. Aghvami, "Implementable access for MIMO receiver architectures," IEEE Communications Magazine, Vol. 45, No. 3, 93-97, Dec. 2007.
doi:10.1561/2000000093

4. Björnson, E., J. Hoydis, and L. Sanguinetti, "MIMO networks: Energy and hardware efficiency," Trends in Signal Processing, Vol. 11, No. 3-4, 154-655, Jun. 2017.

5. Lathi, B. P. and Z. Ding, Digital Communications, ISBN 978-0-19-538493-2, 4/e, 2010.
doi:10.1109/TVT.2011.2157187

6. De Lamare, R. C., "MIMO systems: Signal processing challenges and future trends," IEEE Trans. Veh. Technol., Vol. 60, No. 6, 2482-2494, Jul. 2011.

7. Lee, W. C. Y., Mobile Communications Design Fundamentals, ISBN: 978-0-471-57446-0, Wiley 2/e, 1993.

8. Srivastava, S., A. Gupta, S. Singh, and M. T. Themalil, "Characterization and analysis of bit error rate in binary phase shift keying for future 5G MIMO environment," Int'l Conference on Innovation and Sustainability (ICIS'21), JK Lakshmipat University, Jaipur, Feb. 2021.

9. Balanis, C. A., Antenna Theory: Analysis and Design, John Wiley and Sons, Hoboken, New Jersey, May 2005.
doi:10.1007/978-1-4757-3791-2

10. Waterhouse, R. B., Microstrip Patch Antennas: A Designer's Guide, Kluwer Academic, New York, Feb. 2003.

11. Ibrahim, M. S., "MIMO antenna at Ka-band for fifth generation applications," International Journal of Communication Antennas and Propagation, Vol. 9, No. 2, 100-109, Apr. 2019.

12. Björnson, E., J. Hoydis, and L. Sanguinetti, Massive MIMO, Vol. 17, No. 1, 574-590, Transactions Wireless Communications, Jan. 2018.

13. Strategic roadmap towards 5G for Europe: RSPG on 5G networks Radio Spectrum Policy Group 18-005, Jan. 2018.
doi:10.1109/COMST.2016.2532458

14. Agiwal, M., A. Roy, and N. Saxena, "5G wireless networks survey," IEEE Communications Surveys, Vol. 18, 1617-1655, Sept. 2016.
doi:10.1109/MCOMSTD.2017.1700042

15. Parkvall, S., E. Dahlman, A. Furuskar, and M. Frenne, "5G radio access technology," IEEE Communications Standards Magazine, Vol. 1, No. 4, 24-30, Dec. 2017.
doi:10.1109/MVT.2017.2776668

16. Patzold, M., "5G readiness," IEEE Vehicular Technology Magazine, Vol. 13, No. 1, 6-13, Mar. 2018.
doi:10.1049/el.2017.2825

17. Sarkar, D. and K. V. Srivastava, "SRR loaded dual-band MIMO antenna for WLAN/WiMAX/WiFi/4G-LTE and 5G applications," Electronics Letters, Vol. 53, No. 25, 1623-1624, Jan. 2017.
doi:10.1109/TAP.2004.835272

18. Jensen, M. and J. Wallace, "Antennas and propagation for MIMO wireless communications," IEEE Transactions on Antennas and Propagation, Vol. 52, No. 11, 2810-2824, May 2004.

19. Sharawi, M. S., A. B. Numan, M. U. Khan, and D. N. Aloi, "MIMO antenna system with enhanced isolation for mobile terminals," IEEE Antennas and Wireless Propagation Letters, Vol. 11, 1006-1009, Oct. 2012.
doi:10.1109/LAWP.2019.2937851

20. Cui, L., J. Guo, Y. Liu, and C.-Y.-D. Sim, "An 8-element dualband MIMO antenna with decoupling stub for 5G smartphone applications," IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 10, 2095-2099, Jun. 2019.

21. Stutzman, W. S. and G. A. Thiele, Antenna Theory and Design, John Wiley and Sons, 2009.

22. Nossek, J. A. and M. T. Ivrlac, "The why and how of multiantenna systems," International Workshop on Smart Antennas, IEEE Xplore: DOI-978-1-4244-1757-5/08, Feb. 2008.

23. Garg, R., P. Bhartia, I. J. Bahl, and A. Ittipiboon, Microstrip Antenna Design Handbook, Artech House, 2001.

24. Roy, J. S. and M. Thomas, "Compact broadband microstrip antennas next generation wireless communication HIPERLAN/2," Intl. Jnl. of Microwave Science and Technology, Vol. 2007, No. 10, 1-4, Jul. 2007.

25. Roy, J. S. and M. Thomas, "Investigations on a new proximity coupled dual frequency microstrip antenna," Microwave Review, Vol. 13, 12-15, Jun. 2007.

26. Roy, J. S., M. Thomas, and J. Ghosh, "Miniaturized broadband circularly polarized microstrip antenna for WLAN," International Journal of Microwave and Optical Technology, Vol. 3, No. 4, 467-473, Sept. 2008.
doi:10.2528/PIERM08050506

27. Roy, J. and M. T. Themalil, "Design of a circularly polarized microstrip antenna for WLAN," Progress In Electromagnetics Research M, Vol. 3, 79-90, 2008.

28. Thomas, M., J. S. Roy, and B. Gupta, "Design of a miniaturized proximity-coupled microstrip antenna for 5 GHz band wireless communication," ACTA Technica Journal, Vol. 55, No. 2, 131-138, Apr.-Jun. 2010.

29. Thomas, M., J. S. Roy, and B. Gupta, "Design of circularly polarized T-stub coupled microstrip antenna for WLAN," Asian Jnl. of Applied Sc., Vol. 4, No. 4, 883-888, Aug. 2016.

30. James, J. M. and M. T. Themalil, "Design of heterogeneous wireless mesh network for LTE," Journal of Computer Sci. and Tech.: E Network, Web Security, Vol. 17, No. 3, USA, Online ISSN: 0975-4172, Print ISSN: 0975-4350, 2017.

31. Themalil, M. T., S. Singh, D. Jain, D. Yadav, M. Rammal, and M. Sharma, "Miniaturization capability of pixel antenna for nanosatellite footprints," VLSI, Microwave and Wireless Technologies, Vol. 877, Lect. Notes Elec. Eng., Springer, ISBN: 978-981-19-0311-3, doi: 10.1007/978-981-19-0312-0, Mar. 20-21, 2021.

32. Singh, S. and M. T. Themalil, "Investigations on 2T2R MIMO microstrip patch antenna for next generation wireless networks," International Journal of Microwave and Optical Technology, Vol. 17, No. 6, 630-638, USA, Nov. 2022.

Dr. Satya Singh

Dr. Milind Thomas Themalil