volume | PIER Journals

Abstract

An eight-element multiple-input-multiple-output antenna system which consists of H-shaped slot antennas is presented around the handset frame for 5G applications. Each antenna element consists of a H-shaped radiating surface and an L-shaped microstrip feeder. In the frequency bands of 3.4-3.6 GHz and 4.7-5.1 GHz, the isolation is lower than -15 dB by introducing the ladder-shaped defect ground structure. The antenna efficiency is 50%-81%, and the envelope correlation coefficient is lower than 0.02 among antenna elements. The measurement results agree well with the simulation ones, indicating that the proposed antenna can satisfy the requirements of 5G communication.

1. Huang, C., Y.-C. Jiao, and Z.-B. Weng, "Novel compact CRLH-TL-based tri-band MIMO antenna element for the 5G mobile handsets," Microwave and Optical Technology Letters, Vol. 60, No. 10, 2559-2564, Oct. 2018.

2. Das, G., A. Sharma, R. K. Gangwar, and M. S. Sharawi, "Compact back-to-back DRA-based four-port MIMO antenna system with bi-directional diversity," Electronics Letters, Vol. 54, No. 14, 884-886, 2018.
doi:10.1049/el.2018.0959

3. Wu, W., R. Zhi, Y. Chen, H. Li, Y. Tan, and G. Liu, "A compact multiband MIMO antenna for IEEE 802.11 a/b/g/n applications," Progress In Electromagnetics Research Letters, Vol. 84, 59-65, 2019.
doi:10.2528/PIERL19031106

4. Li, D.-H., F.-S. Zhang, L.-X. Cao, and Y. Zhao, "A compact dual band-rejected MIMO Vivaldi antenna for UWB wireless applications," Progress In Electromagnetics Research Letters, Vol. 8, 97-105, 2019.

5. Das, G., N. K. Sahu, A. Sharma, R. K. Gangwar, and M. S. Sharawi, "Dielectric resonator-based four-element eight-port MIMO antenna with multi-directional pattern diversity," IET Microwaves Antennas & Propagation, Vol. 13, No. 1, 16-22, 2019.
doi:10.1049/iet-map.2018.5081

6. Deng, J.-Y., J. Yao, D.-Q. Sun, and L.-X. Guo, "Ten-element MIMO antenna for 5G terminals," Microwave and Optical Technology Letters, Vol. 60, No. 12, 3045-3049, Dec. 2018.
doi:10.1002/mop.31404

7. Liu, D. Q., M. Zhang, H. J. Luo, H. L. Wen, and J. Wang, "Dual-band platform-free PIFA for 5G MIMO application of mobile devices," IEEE Transactions on Antennas and Propagation, Vol. 66, No. 11, 6328-6333, 2018.
doi:10.1109/TAP.2018.2863109

8. Subbaraj, S., et al. "Performance enhancement and signal integrity analysis of multiband MIMO antenna for handheld electronic devices," IET Microwaves, Antennas & Propagation, Vol. 13, No. 5, 631-641, 2019.
doi:10.1049/iet-map.2018.5562

9. Li, Y., C. Sim, Y. Luo, and G. Yang, "High-isolation 3.5-GHz 8-antenna MIMO array using balanced open slot antenna element for 5G smartphones," IEEE Transactions on Antennas and Propagation, Vol. 66, No. 6, 3820-3830, 2019.
doi:10.1109/TAP.2019.2902751

10. Abdelrahim Ahmed, W. and Q. Feng, "A compact wideband slot antenna for universal UHF RFID reader," Progress In Electromagnetics Research Letters, Vol. 73, 137-144, 2018.
doi:10.2528/PIERL18010941

11. Saxena, S., B. K. Kanaujia, S. Dwari, S. Kumar, and R. Tiwari, "MIMO antenna with built-in circular shaped isolator for sub-6 GHz 5G applications," Electronics Letters, Vol. 54, No. 8, 478-480, 2018.
doi:10.1049/el.2017.4514

12. 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

Dr. Zhong Yu

Dr. Yuqing Chen

Dr. Yongbin Xie

Dr. Nan Guo