Dual-Band Highly Isolated Eight-Element MIMO Antenna for 5G Mobile Phone

Authors

  • Yonghao Wang College of Electronic and Information Engineering Inner Mongolia University, Hohhot 010021, China
  • Xin Wang College of Electronic and Information Engineering Inner Mongolia University, Hohhot 010021, China
  • Junlin Wang College of Electronic and Information Engineering Inner Mongolia University, Hohhot 010021, China
  • Rui Shao College of Electronic and Information Engineering Inner Mongolia University, Hohhot 010021, China

DOI:

https://doi.org/10.13052/2022.ACES.J.370508

Keywords:

antenna pair, characteristic mode analysis (CMA), dual band, high-isolation, MIMO, 5G smartphones

Abstract

Based on the characteristic mode analysis (CMA) theory, a compact dual-band dual antenna pair with high element isolation function for 5G mobile terminal is proposed and designed in this paper. The antenna pair is composed of a pair of symmetrical stacked F-shaped radiators printed on the outside of the side frame, perpendicular to the main board. Based on the proposed decoupled antenna pairs, four pairs of antenna pairs are placed at both ends of two long side plates, and an 8-element MIMO antenna is proposed. High isolation in the operating frequency bands are achieved by using grounding branches and defective ground structure (DGS). All radiation elements are etched on a low-cost FR4 substrate with a total size of 150 × 75 × 6.8 mm3. The prototype of the antenna array is fabricated and measured. The working range of the antenna pair can cover 3.4GHz-3.6GHz,4.8GHz-5GHz 5G frequency bands and 5GHz-6GHz WLAN / WiFi / WiMax frequency bands. Besides, the isolation between any adjacent array elements are also > 15dB and > 16dB respectively, the total efficiency are 52%–75% and 58%–88% respectively, and the measured envelope correlation coefficients (ECC) are <0.16. Furthermore, user’s head effects are investigated and desirable results are obtained. The above results show that this proposed antenna array is a good candidate for MIMO applications in 5G smartphones.

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Author Biographies

Yonghao Wang, College of Electronic and Information Engineering Inner Mongolia University, Hohhot 010021, China

Yonghao Wang received his bachelor’s degree in communication engineering from Shandong University of Science and Technology in Qingdao, China in July 2020. From September 2020, he studies for a master’s degree in electronic and communication engineering at Inner Mongolia University, Hohhot. China. His research interests are to research and design 5G miniaturized high isolation dual band MIMO antenna for mobile phone.

Xin Wang, College of Electronic and Information Engineering Inner Mongolia University, Hohhot 010021, China

Xin Wang received a doctor’s degree in engineering in Instrument Science and technology of Zhong-bei University, she is currently working in the College of Electronic Information engineering, Inner Mongolia University, Hohhot. China. Her research interests are micro nano RF devices (antennas, filters, couplers, etc.), metamaterial antenna.

Junlin Wang, College of Electronic and Information Engineering Inner Mongolia University, Hohhot 010021, China

Junlin Wang received a doctor’s degree in engineering in Instrument Science and technology of Zhong-bei University. He is currently working in the College of electronic information engineering, Inner Mongolia University, Hohhot. China. His research interests are micro nano RF devices (antennas, filters, couplers, etc.), metamaterial antenna.

Rui Shao, College of Electronic and Information Engineering Inner Mongolia University, Hohhot 010021, China

Rui Shao received a bachelor’s degree in communication engineering from Shandong University of Technology, Zibo, China, in July 2020. From September 2020, she studies for the master’s degree of Information and Communication Engineering at Inner Mongolia University, Hohhot, China. Her research interests are to research and design 5G high isolation MIMO antenna.

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Published

2022-11-14

How to Cite

[1]
Y. . Wang, X. Wang, J. . Wang, and R. . Shao, “Dual-Band Highly Isolated Eight-Element MIMO Antenna for 5G Mobile Phone”, ACES Journal, vol. 37, no. 05, pp. 588–596, Nov. 2022.

Issue

2022: Vol 37 Iss 5

Section

Articles

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