Search search
Publication Date
to
Vol. 98
Latest Volume
All Volumes
PIERL 131 PIERL 130 PIERL 129 PIERL 128 PIERL 127 PIERL 126 PIERL 125 PIERL 124 PIERL 123 PIERL 122 PIERL 121 PIERL 120 PIERL 119 PIERL 118 PIERL 117 PIERL 116 PIERL 115 PIERL 114 PIERL 113 PIERL 112 PIERL 111 PIERL 110 PIERL 109 PIERL 108 PIERL 107 PIERL 106 PIERL 105 PIERL 104 PIERL 103 PIERL 102 PIERL 101 PIERL 100 PIERL 99 PIERL 98 PIERL 97 PIERL 96 PIERL 95 PIERL 94 PIERL 93 PIERL 92 PIERL 91 PIERL 90 PIERL 89 PIERL 88 PIERL 87 PIERL 86 PIERL 85 PIERL 84 PIERL 83 PIERL 82 PIERL 81 PIERL 80 PIERL 79 PIERL 78 PIERL 77 PIERL 76 PIERL 75 PIERL 74 PIERL 73 PIERL 72 PIERL 71 PIERL 70 PIERL 69 PIERL 68 PIERL 67 PIERL 66 PIERL 65 PIERL 64 PIERL 63 PIERL 62 PIERL 61 PIERL 60 PIERL 59 PIERL 58 PIERL 57 PIERL 56 PIERL 55 PIERL 54 PIERL 53 PIERL 52 PIERL 51 PIERL 50 PIERL 49 PIERL 48 PIERL 47 PIERL 46 PIERL 45 PIERL 44 PIERL 43 PIERL 42 PIERL 41 PIERL 40 PIERL 39 PIERL 38 PIERL 37 PIERL 36 PIERL 35 PIERL 34 PIERL 33 PIERL 32 PIERL 31 PIERL 30 PIERL 29 PIERL 28 PIERL 27 PIERL 26 PIERL 25 PIERL 24 PIERL 23 PIERL 22 PIERL 21 PIERL 20 PIERL 19 PIERL 18 PIERL 17 PIERL 16 PIERL 15 PIERL 14 PIERL 13 PIERL 12 PIERL 11 PIERL 10 PIERL 9 PIERL 8 PIERL 7 PIERL 6 PIERL 5 PIERL 4 PIERL 3 PIERL 2 PIERL 1
All Journals
PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2021-07-06
Four-Element Low-Band MIMO Antenna for Mobile Phones with Small Clearance
By
Harri Varheenmaa,

    Mr. Harri Varheenmaa

    School of Electrical Engineering, Department of Electronics and Nanoengineering

    Aalto University

    Finland

    Homepage

Rasmus Luomaniemi,

    Dr. Rasmus Luomaniemi

    Huawei Technologies Finland

    Finland

    Homepage

Anu Lehtovuori,

    Dr. Anu Lehtovuori

    Department of Radio Science and Engineering, School of Electrical Engineering

    Aalto University

    Finland

    Homepage

Pasi Yla-Oijala,

    Dr. Pasi Yla-Oijala

    Department of Radio Science and Engineering

    Aalto University

    Finland

    Homepage

Ville Viikari

    Dr. Ville Viikari

    Helsinki Univ Technol

    Finland

    Homepage

Progress In Electromagnetics Research Letters, Vol. 98, 145-153, 2021
doi:10.2528/PIERL21051402 | Google Scholar

Abstract
This letter presents a four-element MIMO phone antenna with a metallic rim and 2-mm ground clearance that operates in the low-frequency band. Characteristic mode analysis is used to design the metallic rim so that the structure supports four resonating modes that can be excited separately to obtain MIMO operation in the desired frequency range below 1 GHz. Four exciter elements with matching circuits are designed so that the coupling between the ports is moderate. The prototype is manufactured, and measurement results are shown to corroborate the increased capacity compared to traditional two-element MIMO solutions.
Download Full Article (974) View Full Article volume
Citation
Harri Varheenmaa, Rasmus Luomaniemi, Anu Lehtovuori, Pasi Yla-Oijala, and Ville Viikari, "Four-Element Low-Band MIMO Antenna for Mobile Phones with Small Clearance," Progress In Electromagnetics Research Letters, Vol. 98, 145-153, 2021.
doi:10.2528/PIERL21051402
References

1. Varzakas, P., "Average channel capacity for Rayleigh fading spread spectrum MIMO systems," International Journal of Communication Systems, Vol. 19, No. 10, 1081-1087, 2006. [Online]. Available: https://onlinelibrary.wiley.com/doi/abs/10.1002/dac.784.
doi:10.1002/dac.784        Google Scholar

2. Deng, C., Z. Feng, S. V. Hum, "MIMO mobile handset antenna merging characteristic modes for increased bandwidth," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 7, 2660-2667, Jul. 2016.
doi:10.1109/TAP.2016.2537358        Google Scholar

3. Wong, K. -L., Y.-C. Chen, W.-Y. Li, and , "Four LTE low-band smartphone an-tennas and their MIMO performance with user’s hand presence," Microwave and Optical Technology Letters, Vol. 58, No. 9, 2046-2052, 2016. [Online]. Available: https://onlinelibrary.wiley.com/doi/abs/10.1002/mop.29969.
doi:10.1002/mop.29969        Google Scholar

4. Anguera, J., A. Andujar, R. M. Mateos, and S. Kahng, "A 4 × 4 MIMO multiband antenna system with non-resonant elements for smartphone platforms," 2017 11th European Conference on Antennas and Propagation (EUCAP), 2705-2708, Mar. 2017.
doi:10.23919/EuCAP.2017.7928580        Google Scholar

5. Li, M., Y. Ban, Z. Xu, G. Wu, C. Sim, K. Kang, and Z. Yu, "Eight-port orthogonally dual-polarized antenna array for 5G smartphone applications," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 9, 3820-3830, Sep. 2016.
doi:10.1109/TAP.2016.2583501        Google Scholar

6. Huang, D., Z. Du, and Y. Wang, "A quad-antenna system for 4G/5G/GPS metal frame mobile phones," IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 8, 1586-1590, Aug. 2019.
doi:10.1109/LAWP.2019.2924322        Google Scholar

7. Barani, I. R. R. and K. Wong, "Integrated inverted-F and open-slot antennas in the metal-framed smartphone for 2 × 2 LTE LB and 4 × 4 LTE M/HB MIMO operations," IEEE Transactions on Antennas and Propagation, Vol. 66, No. 10, 5004-5012, Oct. 2018.
doi:10.1109/TAP.2018.2854191        Google Scholar

8. Wong, K.-L., C.-C. Wan, and L.-Y. Chen, "Self-decoupled compact metal-frame LTE MIMO antennas for the smartphone," Microwave and Optical Technology Letters, Vol. 60, No. 5, 1170-1179, 2018. [Online]. Available: https://onlinelibrary.wiley.com/doi/abs/10.1002/mop.31129.
doi:10.1002/mop.31129        Google Scholar

9. Ren, A., Y. Liu, and C. Sim, "A compact building block with two shared-aperture antennas for eight-antenna MIMO array in metal-rimmed smartphone," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 10, 6430-6438, Oct. 2019.
doi:10.1109/TAP.2019.2920306        Google Scholar

10. Sun, L., Y. Li, Z. Zhang, and H. Wang, "Self-decoupled mimo antenna pair with shared radiator for 5G smartphones," IEEE Transactions on Antennas and Propagation, Vol. 68, No. 5, 3423-3432, May 2020.
doi:10.1109/TAP.2019.2963664        Google Scholar

11. Chen, H., Y. Tsai, C. 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, Jul. 2020.
doi:10.1109/LAWP.2020.2988898        Google Scholar

12. Harrington, R. and J. Mautz, "Theory of characteristic modes for conducting bodies," IEEE Transactions on Antennas and Propagation, Vol. 19, No. 5, 622-628, Sep. 1971.
doi:10.1109/TAP.1971.1139999        Google Scholar

13. Deng, C., Z. Xu, A. Ren, and S. V. Hum, "TCM-based bezel antenna design with small ground clearance for mobile terminals," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 2, 745-754, Feb. 2019.
doi:10.1109/TAP.2018.2880045        Google Scholar

14. Lehtovuori, A., R. Valkonen, and J. Ilvonen, "Designing capacitive coupling element antennas with bandwidth estimators," IEEE Antennas and Wireless Propagation Letters, Vol. 13, 959-962, 2014.
doi:10.1109/LAWP.2014.2322910        Google Scholar

15., Optenni Oy. Optenni Lab. Accessed: 26.03.2021. [Online]. Available: https://www.optenni.com/..

16. Thaysen, J. and K. B. Jakobsen, "Envelope correlation in (N, N) MIMO antenna array from scattering parameters," Microwave and Optical Technology Letters, Vol. 48, No. 5, 832-834, 2006. [Online]. Available: https://onlinelibrary.wiley.com/doi/abs/10.1002/mop.21490.
doi:10.1002/mop.21490        Google Scholar

17. Tian, R., B. K. Lau, and Z. Ying, "Multiplexing efficiency of MIMO antennas," IEEE Antennas and Wireless Propagation Letters, Vol. 10, 183-186, 2011.
doi:10.1109/LAWP.2011.2125773        Google Scholar

18. Luomaniemi, R., J. Hannula, R. Kormilainen, A. Lehtovuori, and V. Viikari, "Unbroken metal rim MIMO antenna utilizing antenna clusters," IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 6, 1071-1075, Jun. 2019.
doi:10.1109/LAWP.2019.2906993        Google Scholar

19. Xu, Z., Y. Sun, Q. Zhou, Y. Ban, Y. Li, and S. S. Ang, "Reconfigurable MIMO antenna for integrated-metal-rimmed smartphone applications," IEEE Access, Vol. 5, No. 21 , 223-228, 2017.        Google Scholar

20. Zhang, L., Y. Ban, C. Sim, J. Guo, and Z. Yu, "Parallel dual-loop antenna for WWAN/LTE metal-rimmed smartphone," IEEE Transactions on Antennas and Propagation, Vol. 66, No. 3, 1217-1226, Mar. 2018.
doi:10.1109/TAP.2018.2796724        Google Scholar

Download Full Article (974) View Full Article volume


The EM Academy piers.org jpier.org Who's Who in EM
Copyright © 2022 The Electromagnetics Academy. All Rights Reserved.