volume | PIER Journals

Abstract

This paper presents a four-port quarter-mode substrate integrated waveguide (QMSIW) MIMO antenna designed for 2.1 GHz wireless applications. The antenna employs orthogonally positioned complementary square-split ring resonator slots to achieve substantial miniaturization. Additionally, mutual coupling between the antenna elements is effectively minimized by incorporating cross-shaped slots between them, enhancing overall performance. The proposed four-port MIMO antenna achieves high isolation of 40 dB and features a compact electrical size of 0.19λ₀ × 0.19λ₀. The antenna demonstrates outstanding MIMO performance, with simulated and measured gains of 5.32 dBi and 5.44 dBi, respectively. Its efficiency is further supported by key performance metrics, including a low envelope correlation coefficient (ECC) of 0.0841 and a high diversity gain (DG) of 9.22 dB, ensuring enhanced signal reliability and reduced interference. With its compact structure, excellent isolation, and strong diversity performance, the proposed antenna serves as a highly suitable candidate for directional Wi-Fi applications.

1. Jensen, M. A. and J. W. Wallace, "A review of antennas and propagation for MIMO wireless communications," IEEE Transactions on Antennas and Propagation, Vol. 52, No. 11, 2810-2824, 2004. Google Scholar

2. Rosaline, Imaculate, Arvind Kumar, Prashant Upadhyay, and Abu Hena Murshed, "Four element MIMO antenna systems with decoupling lines for high‐speed 5G wireless data communication," International Journal of Antennas and Propagation, Vol. 2022, No. 1, 9078929, 2022. Google Scholar

3. Gesbert, David, Marios Kountouris, Robert W. Heath, Chan-Byoung Chae, and Thomas Salzer, "Shifting the MIMO paradigm," IEEE Signal Processing Magazine, Vol. 24, No. 5, 36-46, 2007. Google Scholar

4. Wu, Ke, D. Deslandes, and Y. Cassivi, "The substrate integrated circuits-a new concept for high-frequency electronics and optoelectronics," 6th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Service, 2003. TELSIKS 2003., Vol. 1, P-III, Nis, Yugoslavia, Oct. 2003.

5. Lokeshwar, Bollavathi, Dorai Venkatasekhar, and Alapati Sudhakar, "Wideband low-profile SIW cavity-backed bilateral slots antenna for X-band application," Progress In Electromagnetics Research M, Vol. 97, 157-166, 2020. Google Scholar

6. Bozzi, M., A. Georgiadis, and K. Wu, "Review of substrate-integrated waveguide circuits and antennas," IET Microwaves, Antennas & Propagation, Vol. 5, No. 8, 909-920, 2011. Google Scholar

7. Deslandes, D. and Ke Wu, "Single-substrate integration technique of planar circuits and waveguide filters," IEEE Transactions on Microwave Theory and Techniques, Vol. 51, No. 2, 593-596, 2003. Google Scholar

8. Iqbal, Amjad, Ismail Ben Mabrouk, Muath Al-Hasan, Mourad Nedil, and Tayeb A. Denidni, "Wideband substrate integrated waveguide antenna for full-duplex systems," IEEE Antennas and Wireless Propagation Letters, Vol. 21, No. 1, 212-216, 2021. Google Scholar

9. Deslandes, D. and Ke Wu, "Accurate modeling, wave mechanisms, and design considerations of a substrate integrated waveguide," IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 6, 2516-2526, 2006. Google Scholar

10. Lai, Qinghua, Christophe Fumeaux, Wei Hong, and RÜdiger Vahldieck, "Characterization of the propagation properties of the half-mode substrate integrated waveguide," IEEE Transactions on Microwave Theory and Techniques, Vol. 57, No. 8, 1996-2004, 2009. Google Scholar

11. Chaturvedi, Divya and Singaravelu Raghavan, "Compact QMSIW based antennas for WLAN/WBAN applications," Progress In Electromagnetics Research C, Vol. 82, 145-153, 2018. Google Scholar

12. Jin, Cheng, Rui Li, Arokiaswami Alphones, and Xiaoyue Bao, "Quarter-mode substrate integrated waveguide and its application to antennas design," IEEE Transactions on Antennas and Propagation, Vol. 61, No. 6, 2921-2928, 2013. Google Scholar

13. Lokeshwar, Bollavathi, Jammalamadugu Ravindranadh, and Devabhaktuni Madhavi, "Design and analysis of a bandwidth enhanced low-profile SIW cavity-backed slot antenna using TE210 mode," Progress In Electromagnetics Research C., Vol. 125, 229-240, 2022.
doi:10.2528/PIERC22081708 Google Scholar

14. Luo, Guo Qing, Zhi Fang Hu, Lin Xi Dong, and Ling Ling Sun, "Planar slot antenna backed by substrate integrated waveguide cavity," IEEE Antennas and Wireless Propagation Letters, Vol. 7, 236-239, 2008. Google Scholar

15. Gao, Mingming, Chunli Liu, Jingchang Nan, and Hongliang Niu, "A broadband SIW cavity-backed circular arc-shaped slot antenna for millimeter-wave applications," Progress In Electromagnetics Research Letters, Vol. 117, 47-54, 2024.
doi:10.2528/PIERL23121505 Google Scholar

16. Nandi, Sourav and Akhilesh Mohan, "A compact eighth-mode circular SIW cavity-based MIMO antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 20, No. 9, 1834-1838, 2021. Google Scholar

17. Niu, Bing-Jian and Jie-Hong Tan, "Compact tri‐band MIMO antenna based on quarter‐mode slotted substrate‐integrated‐waveguide cavity," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 30, No. 3, e22101, 2020. Google Scholar

18. Niu, Bingjian and Jie-Hong Tan, "SIW cavity MIMO antenna using hybrid boundaries and anti-symmetric U-shaped slots," Progress In Electromagnetics Research Letters, Vol. 86, 67-72, 2019. Google Scholar

19. Wu, Yanjie, Kang Ding, Bing Zhang, Duolong Wu, and Jianfeng Li, "SIW‐tapered slot antenna for broadband MIMO applications," IET Microwaves, Antennas & Propagation, Vol. 12, No. 4, 612-616, 2018. Google Scholar

20. Kumar Biswas, Ashim and Ujjal Chakraborty, "Compact wearable MIMO antenna with improved port isolation for ultra‐wideband applications," IET Microwaves, Antennas & Propagation, Vol. 13, No. 4, 498-504, 2019. Google Scholar

21. Niu, Bing-Jian and Yan-Jie Cao, "Bandwidth‐enhanced four‐antenna MIMO system based on SIW cavity," Electronics Letters, Vol. 56, No. 13, 643-645, 2020. Google Scholar

22. Eslami, Ali, Javad Nourinia, Changiz Ghobadi, and Majid Shokri, "Four-element MIMO antenna for X-band applications," International Journal of Microwave and Wireless Technologies, Vol. 13, No. 8, 859-866, 2021. Google Scholar

23. Elobied, Abubaker, Xue-Xia Yang, Biao Du, and Steven Gao, "Dual-polarized 2 × 2 MIMO antenna based on half mode substrate integrated waveguide," 2019 13th European Conference on Antennas and Propagation (EuCAP), 1-3, Krakow, Poland, Mar. 2019.

24. Shokri, Majid, Changiz Ghobadi, Javad Nourinia, Pedro Pinho, Zhale Amiri, Rahim Barzegari, Amir Siahcheshm, Farnaz Shapour, and Keivan Kaboutari, "A compact four elements self-isolated MIMO antenna for C-band applications," 2023 IEEE 27th Workshop on Signal and Power Integrity (SPI), 1-4, Aveiro, Portugal, May 2023.

25. Niu, Bing-Jian and Jie-Hong Tan, "Compact SIW cavity MIMO antenna with enhanced bandwidth and high isolation," Electronics Letters, Vol. 55, No. 11, 631-632, 2019. Google Scholar

26. Elobied, Abubaker Ahmed, Xue-Xia Yang, Tian Lou, and Steven Gao, "Compact 2 × 2 MIMO antenna with low mutual coupling based on half mode substrate integrated waveguide," IEEE Transactions on Antennas and Propagation, Vol. 69, No. 5, 2975-2980, 2020. Google Scholar

27. Elobied, Abubaker Ahmed, Xue-Xia Yang, Ningjie Xie, and Steven Gao, "Dual-band 2 × 2 MIMO antenna with compact size and high isolation based on half-mode SIW," International Journal of Antennas and Propagation, Vol. 2020, No. 1, 2965767, 2020. Google Scholar

28. Zhai, Guohua, Zhi Ning Chen, and Xianming Qing, "Mutual coupling reduction of a closely spaced four-element MIMO antenna system using discrete mushrooms," IEEE Transactions on Microwave Theory and Techniques, Vol. 64, No. 10, 3060-3067, 2016. Google Scholar

29. Sharawi, Mohammad S., Abdelmoniem T. Hassan, and Muhammad U. Khan, "Correlation coefficient calculations for MIMO antenna systems: A comparative study," International Journal of Microwave and Wireless Technologies, Vol. 9, No. 10, 1991-2004, 2017. Google Scholar

Dr. Vudattu Jaya Prakash

Dr. Vutukuri Leela Satyanarayana

Dr. Neelaveni Ammal Murugan

Dr. Inakoti Ramesh Raja

Dr. Krishna Dharavathu

Dr. Shaik Mahaboob Subani