A Novel 4× 4 MIMO Antenna Decoupled by T-Shaped Dummy Antenna with High Robustness for 5G Mobile Devices

Authors

  • Junlin Wang School of Electronic Information Engineering Inner Mongolia University, Hohhot, 010021, China
  • Xiaomin Chen School of Electronic Information Engineering Inner Mongolia University, Hohhot, 010021, China
  • Xin Wang School of Electronic Information Engineering Inner Mongolia University, Hohhot, 010021, China
  • Min Wei School of Electronic Information Engineering Inner Mongolia University, Hohhot, 010021, China

DOI:

https://doi.org/10.13052/2022.ACES.J.371206

Keywords:

compact antenna pair, 5G, high isolation, decoupling, T-shaped dummy antenna

Abstract

It is challenging to design a compact antenna pair with isolation better than 20 db and with robustness to antenna position. In this paper, a T-shaped dummy antenna is adopted to decouple the tightly arranged antenna pair for 5G mobile devices. Working in the 3.8 GHz of N77 band, the proposed antenna pair is with an impedance bandwidth of 280 MHz. Isolation of the proposed antenna pair is enhanced from 13 db to 30 db by adding the T-shaped dummy antenna, and it is with high robustness even though the antenna position is altered. The calculation process of the loading requirement of T-shaped dummy antenna is shown. By duplicating the proposed antenna pair, a 4×4 MIMO antenna with high isolation is proposed. The measured results show the MIMO antenna with isolation better than 31 db, and the average total efficiency is about 49%, and the Envelope Correlation Coefficient (ECC) is lower than 0.05 in the -6 db pass band. To the best of the authors’ knowledge, compared to most of the reported antenna pairs, the proposed 4××4 MIMO antenna is with the highest isolation while keeping a compact size.

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Author Biographies

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

Junlin Wang received his PhD degree in Instrument Science and Technology from North University of China. He is currently working at the School of Electronic Information Engineering, Inner Mongolia University, Hohhot, China. His research interests are in micro and nano RF devices (antennas, filters, couplers, etc.), and metamaterial antennas.

Xiaomin Chen, School of Electronic Information Engineering Inner Mongolia University, Hohhot, 010021, China

Xiaomin Chen received his B.E. degree in Electronic Information Science and Technology from Shaoguan University. He is currently pursuing a master’s degree in Information and Communication Engineering at Inner Mongolia University, Hohhot, China. His research interest is in 5G mobile terminal antennas.

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

Xin Wang received her PhD degree in Instrument Science and Technology from North University of China. She is currently working at the School of Electronic Information Engineering, Inner Mongolia University, Hohhot, China. Her research interests are in micro and nano RF devices (antennas, filters, couplers, etc.), and metamaterial antennas.

Min Wei, School of Electronic Information Engineering Inner Mongolia University, Hohhot, 010021, China

Min Wei received her B.E. degree in Electronic Information Science and Technology from Hexi University. She is currently pursuing a master’s degree in Information and Communication Engineering at Inner Mongolia University, Hohhot, China. Her current research interest is in 5G mobile terminal antennas.

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Published

2022-12-31

How to Cite

[1]
J. . Wang, X. . Chen, X. . Wang, and M. . Wei, “A Novel 4× 4 MIMO Antenna Decoupled by T-Shaped Dummy Antenna with High Robustness for 5G Mobile Devices”, ACES Journal, vol. 37, no. 12, pp. 1225–1231, Dec. 2022.

Issue

2022: Vol 37 Iss 12

Section

Antennas, Metasurfaces, and Testing Methodologies for 5G/6G Communication