A high-isolation wideband mimo antenna with hybrid DGS–EBG decoupling for sub-6 GHZ 5G applications

DOI https://doi.org/10.31130/ud-jst.2026.24(9).372E

Tóm tắt: 8 | PDF: 8

##plugins.themes.academic_pro.article.main##

Author

  • Pham Dinh Hung
    Viettel High Technology Industries Corporation, Vietnam
    Duong Thi Thanh Tu
    Posts and Telecommunications Institute of Technology, Vietnam

Từ khóa:

Wideband MIMO antenna
hybrid DGS–EBG decoupling
high isolation
sub-6 GHz wireless systems

Tóm tắt

This study proposes a wideband four-port MIMO antenna for sub-6 GHz wireless communication systems. The antenna employs four elliptical-slotted radiating elements arranged orthogonally on a 0.762-mm-thick Rogers RO4350B substrate and a hybrid decoupling structure combining a T-shaped defected ground structure with a via-loaded electromagnetic bandgap structure. Six prototypes with overall dimensions of 118 × 118 × 0.762 mm³ were fabricated and measured to evaluate antenna performance and fabrication repeatability. The six prototypes exhibit a mean operating frequency range of 2.25 – 6.82 GHz and a mean minimum isolation of 26.9 dB. The antenna achieves a realized gain of 2.7 – 5.9 dBi, a total radiation efficiency exceeding 85%, and an envelope correlation coefficient below 0.002. These results demonstrate that the antenna is well suited for sub-6 GHz wireless communication applications.

Tài liệu tham khảo

    [1] H. Holma, A. Toskala, and T. Nakamura, Eds., 5G Technology: 3GPP Evolution to 5G-Advanced, 2nd edition. Hoboken, NJ, USA: Wiley, 2024. doi:10.1002/9781119816058.
    [2] IEEE Standards Association, IEEE Standard for Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications - Amendment: Enhancements for Extremely High Throughput (EHT), IEEE Std 802.11be-2024. Piscataway, NJ, USA: IEEE, 2024.
    [3] A. Ghosh, A. Maeder, M. Baker, and D. Chandramouli, “5G Evolution: A View on 5G Cellular Technology Beyond 3GPP Release 15,” IEEE Access, vol. 7, pp. 127639–127651, 2019. doi:10.1109/ACCESS.2019.2939938.
    [4] A. Ramos, T. Varum, and J. N. Matos, “A Review on Mutual Coupling Reduction Techniques in mmWaves Structures and Massive MIMO Arrays,” IEEE Access, vol. 11, pp. 143143–143166, 2023. doi:10.1109/ACCESS.2023.3343107.
    [5] K. V. Babu and B. Anuradha, “Design of UWB MIMO Antenna to Reduce the Mutual Coupling Using Defected Ground Structure,” Wireless Personal Communications, vol. 118, pp. 3469–3484, 2021.
    [6] T. Dabas, D. Gangwar, B. K. Kanaujia, and A. K. Gautam, “Mutual Coupling Reduction Between Elements of UWB MIMO Antenna Using Small Size Uniplanar EBG Exhibiting Multiple Stop Bands,” AEU – International Journal of Electronics and Communications, vol. 93, pp. 32–38, 2018. doi:10.1016/j.aeue.2018.05.033.
    [7] A. Al-Tameemi, G. Hock, T. Kiong, T. Al-Shaikhli, M. Al Ani, and M. K. Al Ani, “Miniaturized Wideband MIMO Antenna Based on Hybrid Isolation Technique,” Journal of Communications Software and Systems, vol. 21, no. 1, pp. 100–108, 2025. doi:10.24138/jcomss-2024-007.
    [8] P. Das and K. Mandal, “Polarization Converter Surface Integrated MIMO Antenna for Simultaneous Reduction of RCS and Mutual Coupling,” IEEE Antennas and Wireless Propagation Letters, vol. 21, no. 9, pp. 1834–1838, 2022. doi:10.1109/LAWP.2022.3179708.
    [9] P. Rakluea and C. Mahatthanajatuphat, “High-Isolation Four-Port Wideband MIMO Antenna Array on Polycarbonate for Sub-6 GHz 5G Systems,” Electronics, vol. 15, no. 7, Art. no. 1466, 2026. doi:10.3390/electronics15071466.
    [10] P. D. Hung and D. T. T. Tu, “2×2 UWB MIMO Antenna With High Isolation for 5G Sub-6GHz Communications,” The University of Danang - Journal of Science and Technology, vol. 23, no. 1, pp. 7–13, 2025. doi:10.31130/ud-jst.2025.415.
    [11] T. Addepalli, K. V. Babu, T. Vidyavathi, R. Manda, and B. K. Kumar, “Design and Analysis of Nonagonal Patch Unit with Rectangular Shaped 4-Element UWB-MIMO Antenna for Portable Wireless Device Applications,” Analog Integrated Circuits and Signal Processing, vol. 114, pp. 459–473, 2023. doi:10.1007/s10470-023-02138-y.
    [12] E. O. Hammerstad, “Equations for Microstrip Circuit Design,” in Proc. 5th European Microwave Conference, Hamburg, Germany, 1975, pp. 268–272.
    [13] C. Votis, G. Tatsis, and P. Kostarakis, “Envelope Correlation Parameter Measurements in a MIMO Antenna Array Configuration,” International Journal of Communications, Network and System Sciences, vol. 3, no. 4, pp. 350–354, 2010. doi:10.4236/ijcns.2010.34044.
    [14] A. A. Ibrahim, M. I. Ahmed, and M. F. Ahmed, “A Systematic Investigation of Four-Port MIMO Antenna Depending on Flexible Material for UWB Networks,” Scientific Reports, vol. 12, Art. no. 14351, 2022. doi:10.1038/s41598-022-18551-8.
    [15] M. Y. Jamal, M. Li, and K. L. Yeung, “Isolation Enhancement of Closely Packed Dual Circularly Polarized MIMO Antenna Using Hybrid Technique,” IEEE Access, vol. 8, pp. 11241–11247, 2020. doi:10.1109/ACCESS.2020.2964902.
    [16] V. N. K. R. Devana et al., “A Compact Self Isolated MIMO UWB Antenna With Band-Notched Characteristics,” IETE Journal of Research, vol. 70, no. 8, pp. 6677–6688, 2024. doi:10.1080/03772063.2024.2310124.
    [17] Y.-L. Ren, C.-Z. Du, and X. You, “High Isolation 4-Port MIMO Slotted Antenna for Sub-6 GHz Wireless Applications,” Microwave and Optical Technology Letters, vol. 66, no. 1, Art. no. e33685, 2024. doi:10.1002/mop.33685.
    [18] J. V. Ayyappan, G. N. A. Mohammed, and S. Subbaraj, “A Four-Port Wideband Filtering Monopole MIMO Array for Sub-6 GHz 5G Communications,” International Journal of Microwave and Wireless Technologies, vol. 15, no. 9, pp. 1620–1629, 2023. doi:10.1017/S1759078723000375.
    [19] E. Joseph, P. Kumar, and T. J. O. Afullo, “Design and Performance Analysis of a Metamaterial-Based Compact High-Isolation UWB MIMO Antenna,” IET Science, Measurement & Technology, vol. 20, Art. no. e70081, 2026. doi:10.1049/smt2.70081.
Xem thêm

##plugins.themes.academic_pro.article.sidebar##

Đã Xuất bản

Sep 30, 2026
Download
PDF (English)
Cách trích dẫn
Hung, P. D., và D. T. T. Tu. “A High-Isolation Wideband Mimo Antenna With Hybrid DGS–EBG Decoupling for Sub-6 GHZ 5G Applications”. Tạp Chí Khoa học Và Công nghệ Đại học Đà Nẵng, vol 24, số p.h 9, Tháng Chín 2026, tr 7-13, doi:10.31130/ud-jst.2026.24(9).372E.

##plugins.themes.academic_pro.article.details##