volume | PIER Journals

Abstract

A compact dual-feed multiple-input multiple-output (MIMO) antenna is designed for sub-6 GHz 5G applications with isolation enhancement. The proposed dual-polarized MIMO antenna formed by each patch uses two inset-feed lines placed orthogonal to each other with symmetric conditions, which excite each port to resonate at the same frequency (3.65 GHz). The stub is identified diagonally based on plated through-hole technology between orthogonal ports. The structure employs a half mode and maintains minimum inter-port isolation (≤-12 dB) of each patch, followed by another patch to form an 8-element miniaturized MIMO antenna. High isolation (≤-15 dB) is achieved with the help of a decoupling structure placed between the antennas in the ground plane. Measurements of a fabricated prototype validate the simulation results. The diversity performances of MIMO antenna parameters like envelope correlatio coefficient (ECC), diversity gain (DG), and Mean Effective Gain (MEG) are also found within acceptable ranges.

1. Wang, Chao, Xue-Song Yang, and Bing-Zhong Wang, "A metamaterial-based compact broadband planar monopole MIMO antenna with high isolation," Microwave and Optical Technology Letters, Vol. 62, No. 9, 2965-2970, 2020.

2. Babu, K. Vasu and Bhuma Anuradha, "Design of MIMO antenna to interference inherent for ultra wide band systems using defected ground structure," Microwave and Optical Technology Letters, Vol. 61, No. 12, 2698-2708, 2019.

3. Dash, Sounik Kiran Kumar, Qingsha S. Cheng, Rusan Kumar Barik, Taimoor Khan, and Karthikeyan Sholampettai Subramanian, "A compact dual-fed highly isolated SIW based self-diplexing antenna," AEU-International Journal of Electronics and Communications, Vol. 132, 153613, 2021.

4. Barik, Rusan Kumar, Slawomir Koziel, Qingsha S. Cheng, and Stanislaw Szczepanski, "Highly miniaturized self-diplexed U-shaped slot antenna based on shielded QMSIW," IEEE Access, Vol. 9, 158926-158935, 2021.

5. Dash, Sounik Kiran Kumar, Qingsha S. Cheng, Rusan Kumar Barik, Nrusingha Charan Pradhan, and Karthikeyan Sholampettai Subramanian, "A compact triple-fed high-isolation SIW-based self-triplexing antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 5, 766-770, 2020.

6. Kumar, A. and S. Raghavan, "Design of SIW cavity-backed self-triplexing antenna," Electronics Letters, Vol. 54, No. 10, 611-612, 2018.

7. Dash, Sounik Kiran Kumar, Qingsha S. Cheng, and Rusan Kumar Barik, "A compact substrate integrated waveguide backed self-quadruplexing antenna for C-band communication," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 30, No. 10, 1-9, 2020.

8. Keshri, Pankaj Kumar, Richa Chandel, S. Kumar Sahu, and Anil K. Gautam, "Compact quad-port high performance UWB MIMO/diversity antenna with slotted ground structure," Progress In Electromagnetics Research C, Vol. 112, 193-205, 2021.

9. Naktong, Watcharaphon and Amnoiy Ruengwaree, "Four-port rectangular monopole antenna for UWB-MIMO applications," Progress In Electromagnetics Research B, Vol. 87, 19-38, 2020.

10. Achariparambil, Abhilash, Paulbert Thomas, Karamkulambel Kunjappan Indhu, Kinatingal Neema, Ramakrishnan Anil Kumar, and Aanandan Chandroth, "Four-element compact and dual-band MIMO antenna with self-decoupled mechanism for 5G applications," Progress In Electromagnetics Research C, Vol. 123, 91-99, 2022.

11. Mathur, Rohit and Santanu Dwari, "Compact 4-port MIMO/diversity antenna with low correlation for UWB application," Frequenz, Vol. 72, No. 9-10, 429-435, 2018.

12. Mohammad Saadh, A. W., Shashank Khangarot, B. V. Sravan, Namratha Aluru, Poonkuzhali Ramaswamy, Tanweer Ali, and Manohara M. M. Pai, "A compact four-element MIMO antenna for WLAN/WiMAX/satellite applications," International Journal of Communication Systems, Vol. 33, No. 14, 1-17, 2020.

13. Sung, Youngje, "Closely spaced MIMO antenna based on substrate-integrated waveguide technology," Microwave and Optical Technology Letters, Vol. 60, No. 7, 1794-1798, 2018.

14. Li, Yanxiu, Li-An Bian, Kai-Da Xu, Yu Liu, Yaokun Wang, Ranhao Chen, and Shu Xie, "Mutual coupling reduction for monopole MIMO antenna using L-shaped stubs, defective ground and chip resistors," AEU - International Journal of Electronics and Communications, Vol. 160, 154524, 2023.

15. Babu, K. Vasu, Sudipta Das, Gorre Naga Jyothi Sree, Shobhit K. Patel, M. Pardha Saradhi, and M. R. N. Tagore, "Design and development of miniaturized MIMO antenna using parasitic elements and machine learning (ML) technique for lower sub 6 GHz 5G applications," AEU - International Journal of Electronics and Communications, Vol. 153, 154281, 2022.

16. Sharma, Kanhaiya and Ganga Prasad Pandey, "Two port compact MIMO antenna for ISM band applications," Progress In Electromagnetics Research C, Vol. 100, 173-185, 2020.

17. Tamminaina, Govindarao and Ramesh Manikonda, "Investigation on performance of four port MIMO antenna using electromagnetic band gap for 5G communication," Progress In Electromagnetics Research M, Vol. 119, 51-62, 2023.

18. Sarkar, Goffar Ali, Suparna Ballav, Ayan Chatterjee, Subarna Ranjit, and Susanta Kumar Parui, "Four element MIMO DRA with high isolation for WLAN applications," Progress In Electromagnetics Research Letters, Vol. 84, 99-106, 2019.

19. Sharma, Rashbha, Rajesh Khanna, and Geetanjali Singla, "A miniaturized highly isolated double negative metasurface MIMO antenna for sub-6 GHz band," Sadhana - Academy Proceedings in Engineering Sciences, Vol. 47, No. 4, 202, 2022.

20. Zou, XiaoJun, Guang Ming Wang, Ya Wei Wang, and Bin Feng Zong, "Decoupling of dual-band closely spaced MIMO antennas based on novel coupled resonator structure," Frequenz, Vol. 72, No. 9-10, 437-441, 2018.

21. Addepalli, Tathababu, T. Vidyavathi, K. Neelima, M. Sharma, and D. Kumar, "Asymmetrical fed Calendula flower-shaped four-port 5G-NR band (n77, n78, and n79) MIMO antenna with high diversity performance," International Journal of Microwave and Wireless Technologies, Vol. 15, No. 4, 683-697, 2023.
doi:10.1017/S1759078722000800

22. Rajesh, Kumar D. and Babu G. Venkat, "Efficient and optimized six-port MIMO antenna system for 5G smartphones," Frequenz, Vol. 75, No. 11-12, 501-512, 2021.

23. Parchin, Naser Ojaroudi, Ahmed S. I. Amar, Mohammad Darwish, Karim H. Moussa, Chan Hwang See, Raed A. Abd-Alhameed, Norah Muhammad Alwadai, and Heba G. Mohamed, "Four-element/eight-port MIMO antenna system with diversity and desirable radiation for sub 6 GHz modern 5G smartphones," IEEE Access, Vol. 10, 133037-133051, 2022.

24. Parchin, Naser Ojaroudi, Haleh Jahanbakhsh Basherlou, Yasir I. A. Al-Yasir, Ahmed M. Abdulkhaleq, Raed A. Abd-Alhameed, and Peter S. Excell, "Eight-port MIMO antenna system for 2.6 GHz LTE cellular communications," Progress In Electromagnetics Research C, Vol. 99, 49-59, 2020.

25. Kumar, Anand, Santosh Kumar Mahto, Rashmi Sinha, and Arvind Choubey, "Dual circular slot ring triple-band MIMO antenna for 5G applications," Frequenz, Vol. 75, No. 3-4, 91-100, 2021.

26. Liu, Jinhai, Hanping Liu, Xianghua Dou, Yanke Tang, Chen Zhang, Li Wang, Rongxia Tang, and Yingzeng Yin, "A low profile, dual-band, dual-polarized patch antenna with antenna-filter functions and its application in MIMO systems," IEEE Access, Vol. 9, 101164-101171, 2021.

27. Kaushal, Vipul, Amit Birwal, and Kamlesh Patel, "Diversity characteristics of four-element ring slot-based MIMO antenna for sub-6-GHz applications," ETRI Journal, Vol. 45, No. 4, 581-593, 2023.

28. Naser, Hussein M., Oras A. Al-Ani, and Mahmood F. Mosleh, "W-shaped eight-port wideband MIMO antenna," Progress In Electromagnetics Research C, Vol. 134, 211-222, 2023.

29. Kaur, Inderpreet, Banani Basu, and Anil Singh, "Sub-6 GHz metallic via integrated MIMO antenna array for 5G smartphone," Progress In Electromagnetics Research C, Vol. 138, 91-104, 2023.
doi:10.2528/PIERC23060107

30. Addepalli, Tathababu, Jetti Chandrasekhar Rao, Penchala Reddy Sura, Boddapalli Venkata Ramana, and Vella Satyanarayana, "Compact `Q'-shaped connected ground 4-element MIMO antenna for X-band applications," Progress In Electromagnetics Research C, Vol. 130, 117-126, 2023.

Dr. Munusami Cholavendan

Mr. Venkatesan Rajeshkumar