volume | PIER Journals

Abstract

In this paper, a frog-shaped ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna is proposed for 5G applications in the n77, n78, n79, and 6 GHz bands with a compact antenna structure of 31×55×1.5 mm³. The designed antenna consists of two frog-shaped monopole antennas and a floor from which part has been removed, and the operating bandwidths range from 3.05 to 13.38 GHz, which meets the design criteria for UWB. The T-shaped floor with two T-shaped slots impedes the flow of coupling currents and improves the isolation of the antenna. This results in an isolation of less than -17 dB over the entire operating bandwidth and less than -20 dB in the 5G band. In addition, the envelope correlation coefficient (ECC) is less than 0.007, the diversity gain (DG) more than 9.96, the total active reflection coefficient (TARC) less than -30 dB, and the channel capacity loss (CCL) less than 0.34 bit/s/Hz. The measured and simulated results agree with each other, demonstrating their potential application in 5G communication systems.

1. "Regulations of the people's republic of China on the division of radio frequencies," 1-241, China: Ministry of Industry and Information Technology, 2023.

2. "Ultra-wideband transmission systems," 34852-34860, Federal Communications Commission 47 CFR Part 15, 2002.

3. Molisch, Andreas F. and Moe Z. Win, "MIMO systems with antenna selection," IEEE Microwave Magazine, Vol. 5, No. 1, 46-56, 2004.

4. Paulraj, Arogyaswami J., Dhananjay A. Gore, Rohit U. Nabar, and Helmut Bolcskei, "An overview of MIMO communications --- A key to gigabit wireless," Proceedings of the IEEE, Vol. 92, No. 2, 198-218, 2004.
doi:10.1109/JPROC.2003.821915

5. Daghari, Marwa, Chaker Essid, and Hedi Sakli, "Muli-UWB antenna system design for 5G wireless applications with diversity," Wireless Communications and Mobile Computing, Vol. 2021, No. 1, 9966581, 2021.

6. Addepalli, Tathababu and V. R. Anitha, "Parametric analysis of compact UWB-MIMO antenna with improved isolation using parasitic reflectors and protruded ground strips," Wireless Personal Communications, Vol. 123, No. 3, 2209-2225, 2022.

7. Sakli, Hedi, Chafai Abdelhamid, Chaker Essid, and Nizar Sakli, "Metamaterial-based antenna performance enhancement for MIMO system applications," IEEE Access, Vol. 9, 38546-38556, 2021.

8. Ahmed, Bazil Taha, "High isolation compact UWB MIMO antennas," Wireless Personal Communications, Vol. 128, No. 4, 3003-3029, 2023.

9. Siyara, Jaydip P., Mahesh N. Jiyani, Osamah Alsalman, Sunil P. Lavadiya, and Shobhit K. Patel, "Novel metamaterial array-based dual port MIMO antenna using low profile substrate with feature multiband, and high isolation for sub-6G, IoT, and WiMAX applications," Physica Scripta, Vol. 99, No. 9, 095531, 2024.

10. Zeain, Mohammed Yousif, Maisarah Abu, Ayman A. Althuwayb, Hussein Alsariera, Ahmed Jamal Abdullah Al-Gburi, Ali Abdulateef Abdulbari, and Zahriladha Zakaria, "A new technique of FSS-based novel chair-shaped compact MIMO antenna to enhance the gain for sub-6GHz 5G applications," IEEE Access, Vol. 12, 49489-49507, 2024.

11. Kumar, Praveen, Rashmi Sinha, Arvind Choubey, and Santosh Kumar Mahto, "DGS based miniaturized wideband MIMO antenna with efficient isolation for C band applications," Frequenz, Vol. 77, No. 3-4, 163-172, 2023.

12. Chakraborty, Swarup, Muhammad Asad Rahman, Md. Azad Hossain, Eisuke Nishiyama, and Ichihiko Toyoda, "A novel dual-band elliptical ring slot MIMO antenna with orthogonal circular polarization for 5G applications," Heliyon, Vol. 10, No. 13, e33176, 2024.

13. Li, Wanwan, Ling Wu, Shengqiang Li, Xia Cao, and Bing Yang, "Bandwidth enhancement and isolation improvement in compact UWB-MIMO antenna assisted by characteristic mode analysis," IEEE Access, Vol. 12, 17152-17163, 2024.

14. Shariff, B. G. Parveez, Tanweer Ali, Pallavi R. Mane, Praveen Kumar, and Sameena Pathan, "Compact wideband two-element millimeter wave MIMO antenna with CMT based modified T-shaped decoupling structure for mobile applications with estimated link budget in urban scenario," AEU --- International Journal of Electronics and Communications, Vol. 177, 155209, 2024.

15. Alharbi, Abdullah G., Umair Rafique, Shakir Ullah, Salahuddin Khan, Syed Muzahir Abbas, Esraa Mousa Ali, Mohammad Alibakhshikenari, and Mariana Dalarsson, "Novel MIMO antenna system for ultra wideband applications," Applied Sciences, Vol. 12, No. 7, 3684, Apr. 2022.

16. Abdelghany, Mahmoud A., M. Fathy Abo Sree, Arpan Desai, and Ahmed A. Ibrahim, "4-Port octagonal shaped MIMO antenna with low mutual coupling for UWB applications," Computer Modeling in Engineering & Sciences, Vol. 136, No. 2, 1999-2015, 2023.
doi:10.32604/cmes.2023.023643

17. Saleem, Summaiyya, Sarita Kumari, Dinesh Yadav, Mohd Gulman Siddiqui, and Deepak Bhatnagar, "A planar UWB-MIMO antenna with high isolation and reconfigurable single band-elimination characteristics," AEU --- International Journal of Electronics and Communications, Vol. 170, 154853, 2023.

18. Kansal, Parul, Anup Kumar Mandpura, and Narendra Kumar, "Triple band self-decoupled MIMO antenna pair for 5G communication," Physica Scripta, Vol. 99, No. 9, 095532, 2024.

19. Sharawi, Mohammad S., "Printed multi-band MIMO antenna systems and their performance metrics [wireless corner]," IEEE Antennas and Propagation Magazine, Vol. 55, No. 5, 218-232, 2013.

20. Mohanty, Asutosh and Bikash Ranjan Behera, "Insights on radiation modes and pattern diversity of two element UWB fractal MIMO antenna using theory of characteristics modes analysis," AEU --- International Journal of Electronics and Communications, Vol. 135, 153726, Jun. 2021.

21. Kiani, Saad Hassan, Huseyin Serif Savci, Mehr E. Munir, Ahmed Sedik, and Hala Mostafa, "An ultra-wide band MIMO antenna system with enhanced isolation for microwave imaging applications," Micromachines, Vol. 14, No. 9, 1732, 2023.

22. Du, Chenzhu and Huanchen Peng, "Cpw-fed UWB-MIMO antenna with triple-band notched and high isolation using double Y-shaped decoupling structure," The Applied Computational Electromagnetics Society Journal (ACES), 903-913, 2023.

Dr. Shanhua Yao

Mr. Tianchu Yang

Dr. Xiaorong Qiu

Dr. Xiang Li