Vol. 107

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2022-01-11

A Six-Port Slot Antenna System with Wideband and High-Isolation for 5G NR Bands

By Weidong Mu, Zhong-Gen Wang, Ming Yang, Wenyan Nie, and Pan Wang
Progress In Electromagnetics Research M, Vol. 107, 105-118, 2022
doi:10.2528/PIERM21112005

Abstract

In this article, a slot-antenna array with wideband and high-isolation for multiple-input multiple-output (MIMO) systems is presented that can be used in fifth-generation new radio (5G NR) communication. The MIMO antenna system is realized by loading six identical antennas (Ant1-Ant6) into an FR4 substrate to form a six-port array for a 6×6 MIMO system. Each antenna element is a slot antenna type that is composed of a T-shaped open slot and an L-shaped 50 Ω microstrip line. Each T-shaped slot is formed by inserting an I-shaped open branch in the center of the ground plane's U-shaped slot. The L-shaped microstrip line is placed on the upper surface of FR4 to enable coupling feeding in the 3.3 to 5.10 GHz frequency range to cover the 5G NR bands N77/N78/N79. The isolation is increased to more than 18.1 dB by etching the T-shaped slot between the radiation elements on the metal plate. The proposed antenna system was fabricated and tested. The experimental results indicate that the MIMO system can cover the frequency range of 3.20-5.15 GHz with a return loss of 6 dB and provides isolation greater than 16.2 dB. Additionally, a total efficiency greater than 50% and envelope correlation coefficient of less than 0.02 are obtained. The performance under hand-on scenarios is also good. Simulated and measured results indicate that the stated results are consistent. The test results indicate that the antenna satisfies the 5G communication requirements.

Citation


Weidong Mu, Zhong-Gen Wang, Ming Yang, Wenyan Nie, and Pan Wang, "A Six-Port Slot Antenna System with Wideband and High-Isolation for 5G NR Bands," Progress In Electromagnetics Research M, Vol. 107, 105-118, 2022.
doi:10.2528/PIERM21112005
http://jpier.org/PIERM/pier.php?paper=21112005

References


    1. Chen, H.-D., Y.-C. Tsai, C.-Y.-D. Sim, and C. Kuo, "Broadband eight-antenna array design for sub-6 GHz 5G NR bands metal-frame smartphone applications," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 7, 1078-1082, 2020.
    doi:10.1109/LAWP.2020.2988898

    2. Bait-Suwailam, M. M., T. S. Almoneef, and S. M. Saeed, "Wideband MIMO antenna with compact decoupling structure for 5G wireless communication applications," Progress In Electromagnetics Research Letters, Vol. 100, 117-125, 2021.
    doi:10.2528/PIERL21080602

    3. Ban, Y.-L., C. Li, C.-Y.-D. Sim, G. Wu, and K.-L. Wong, "4G/5G multiple antennas for future multi-mode smartphone applications," IEEE Access, Vol. 4, 2981-2988, 2016.
    doi:10.1109/ACCESS.2016.2582786

    4. Cai, Q., Y. Li, X. Zhang, and W. Shen, "Wideband MIMO antenna array covering 3.3-7.1 GHz for 5G metal-rimmed smartphone applications," IEEE Access, Vol. 7, 142070-142084, 2019.
    doi:10.1109/ACCESS.2019.2944681

    5. Chang, L., Y. Yu, K. Wei, and H. Wang, "Polarization-orthogonal co-frequency dual antenna pair suitable for 5G MIMO smartphone with metallic bezels," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 8, 5212-5220, 2019.
    doi:10.1109/TAP.2019.2913738

    6. Hu, W., et al., "Dual-band ten-element MIMO array based on dual-mode IFAs for 5G terminal applications," IEEE Access, Vol. 7, 178476-178485, 2019.
    doi:10.1109/ACCESS.2019.2958745

    7. Jaglan, N., S. D. Gupta, B. K. Kanaujia, and M. S. Sharawi, "10 element sub-6-GHz multi-band double-T based MIMO antenna system for 5G smartphones," IEEE Access, Vol. 9, 118662-118672, 2021.
    doi:10.1109/ACCESS.2021.3107625

    8. Jain, P., A. Thourwa, N. Sardana, S. Kumar, N. Gupta, and A. K. Singh, "I-shaped metamaterial antenna for X-band applications," 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), 2800-2803, St Petersburg, Russia, May 22-25, 2017.

    9. Jha, P., A. Kumar, A. De, and R. K. Jain, "Modified CSRR based dual-band four-element MIMO antenna for 5G smartphone communication," Progress In Electromagnetics Research Letters, Vol. 101, 35-42, 2021.
    doi:10.2528/PIERL21081603

    10. Jiang, W., B. Liu, Y. Cui, and W. Hu, "High-isolation eight-element MIMO array for 5G smartphone applications," IEEE Access, Vol. 7, 34104-34112, 2019.
    doi:10.1109/ACCESS.2019.2904647

    11. Liu, D. Q., H. J. Luo, M. Zhang, H. L. Wen, B. Wang, and J. Wang, "An extremely low-profile wideband MIMO antenna for 5G smartphones," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 9, 5772-5780, 2019.
    doi:10.1109/TAP.2019.2908261

    12. Parchin, N. O., H. J. Basherlou, I. A. Yasir Al-Yasir, M. Sajedin, J. Rodriguez, and R. A. Abd-Alhameed, "Multi-mode smartphone antenna array for 5G massive MIMO applications," 2020 14th European Conference on Antennas and Propagation (EuCAP), 1-4, 2020.

    13. Piao, H., Y. Jin, and L. Qu, "Isolated ground-radiation antenna with inherent decoupling effect and its applications in 5G MIMO antenna array," IEEE Access, Vol. 8, 139892-139902, 2020.
    doi:10.1109/ACCESS.2020.3013140

    14. Srinivasarao, G., "Algorithm approach to multiple input multiple output (MIMO) systems," Int. J. Innov. Res. Comput. Commun. Eng., Vol. 3, No. 2, 11918-11924, 2015.

    15. Wong, K.-L., C.-Y. Tsai, and J.-Y. Lu, "Two asymmetrically mirrored gap-coupled loop antennas as a compact building block for eight-antenna MIMO array in the future smartphone," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 4, 1765-1778, 2017.
    doi:10.1109/TAP.2017.2670534

    16. Yuan, X.-T., Z. Chen, T. Gu, and T. Yuan, "A wideband PIFA-pair-based MIMO antenna for 5G smartphones," IEEE Antennas and Wireless Propagation Letters, Vol. 20, No. 3, 371-375, 2021.
    doi:10.1109/LAWP.2021.3050337

    17. Zhang, X., Y. Li, W. Wang, and W. Shen, "Ultra-wideband 8-port MIMO antenna array for 5G metal-frame smartphones," IEEE Access, Vol. 7, 72273-72282, 2019.
    doi:10.1109/ACCESS.2019.2919622

    18. Zhao, A. and Z. Ren, "Size reduction of self-isolated MIMO antenna system for 5G mobile phone applications," IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 1, 152-156, 2019.
    doi:10.1109/LAWP.2018.2883428

    19. Zhao, A. and Z. Ren, "Wideband MIMO antenna systems based on coupled-loop antenna for 5G N77/N78/N79 applications in mobile terminals," IEEE Access, Vol. 7, 93761-93771, 2019.
    doi:10.1109/ACCESS.2019.2913466

    20. Zhao, X., S. P. Yeo, and L. C. Ong, "Decoupling of inverted-F antennas with high-order modes of ground plane for 5G mobile MIMO platform," IEEE Transactions on Antennas and Propagation, Vol. 66, No. 9, 4485-4495, 2018.
    doi:10.1109/TAP.2018.2851381

    21. Barani, I. R. R., K.-L. Wong, Y.-X. Zhang, and W.-Y. Li, "Low-profile wideband conjoined open-slot antennas fed by grounded coplanar waveguides for 4×4 5G MIMO operation," IEEE Transactions on Antennas and Propagation, Vol. 68, No. 4, 2646-2657, 2020.
    doi:10.1109/TAP.2019.2957967

    22. Chen, S.-C., L.-C. Chou, C.-I. G. Hsu, and S.-M. Li, "Compact sub-6-GHz four-element MIMO slot antenna system for 5G tablet devices," IEEE Access, Vol. 8, 154652-154662, 2020.
    doi:10.1109/ACCESS.2020.3016649

    23. Jaglan, N., S. D. Gupta, and M. S. Sharawi, "18 element massive MIMO/diversity 5G smartphones antenna design for sub-6 GHz LTE bands 42/43 applications," IEEE Open Journal of Antennas and Propagation, Vol. 2, 533-545, 2021.
    doi:10.1109/OJAP.2021.3074290

    24. Li, Y., C.-Y.-D. Sim, Y. Luo, and G. Yang, "High-isolation 3.5 GHz eight-antenna MIMO array using balanced open-slot antenna element for 5G smartphones," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 6, 3820-3830, 2019.
    doi:10.1109/TAP.2019.2902751

    25. Parchin, N. O., et al., "Eight-element dual-polarized MIMO slot antenna system for 5G smartphone applications," IEEE Access, Vol. 7, 15612-15622, 2019.
    doi:10.1109/ACCESS.2019.2893112

    26. Ullah, R., S. Ullah, R. Ullah, F. Faisal, I. B. Mabrouk, and M. J. A. Hasan, "A 10-ports MIMO antenna system for 5G smart-phone applications," IEEE Access, Vol. 8, 218477-218488, 2020.
    doi:10.1109/ACCESS.2020.3042750

    27. Yuan, X.-T., W. He, K.-D. Hong, C.-Z. Han, Z. Chen, and T. Yuan, "Ultra-wideband MIMO antenna system with high element-isolation for 5G smartphone application," IEEE Access, Vol. 8, 56281-56289, 2020.
    doi:10.1109/ACCESS.2020.2982036

    28. Li, M., Z. Xu, Y. Ban, Q. Yang, and Q. Zhou, "Eight-port dual-polarized MIMO antenna for 5G smartphone applications," 2016 IEEE 5th Asia-Paci c Conference on Antennas and Propagation (APCAP), 195-196, 2016.
    doi:10.1109/APCAP.2016.7843165

    29. Deng, J., J. Li, L. Zhao, and L. Guo, "A dual-band inverted-F MIMO antenna with enhanced isolation for WLAN applications," IEEE Antennas and Wireless Propagation Letters, Vol. 16, 2270-2273, 2017.
    doi:10.1109/LAWP.2017.2713986

    30. Dong, J., X. Yu, and L. Deng, "A decoupled multiband dual-antenna system for WWAN/LTE smartphone applications," IEEE Antennas and Wireless Propagation Letters, Vol. 16, 1528-1532, 2017.
    doi:10.1109/LAWP.2017.2647807

    31. Wang, Y. and Z. Du, "A wideband printed dual-antenna with three neutralization lines for mobile terminals," IEEE Transactions on Antennas and Propagation, Vol. 62, No. 3, 1495-1500, 2014.
    doi:10.1109/TAP.2013.2295226

    32. Fu, Z. and W. Shen, "Eight-element self-decoupled MIMO antenna design for 5G smartphones," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 31, No. 3, Art no. e22523, 2021.

    33. Wong, K., C. Wan, and L. Chen, "Self-decoupled compact metal-frame LTE MIMO antennas for the smartphone," Microwave and Optical Technology Letters, Vol. 60, No. 5, 1170-1179, 2018.
    doi:10.1002/mop.31129

    34. Zhao, A. and Z. Ren, "Multiple-input and multiple-output antenna system with self-isolated antenna element for fifth-generation mobile terminals," Microwave and Optical Technology Letters, Vol. 61, No. 1, 20-27, 2019.
    doi:10.1002/mop.31515

    35. Jain, P., et al., "Ultra-thin metamaterial perfect absorbers for single-/dual-/multi-band microwave applications," IET Microwaves, Antennas and Propagation, Vol. 14, No. 5, 448-455, 2020.
    doi:10.1049/iet-map.2019.0623

    36. Sharawi, M. 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.
    doi:10.1109/MAP.2013.6735522