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A printed multiband MIMO antenna with decoupling element

Published online by Cambridge University Press:  01 March 2019

Ziyu Xu ,
Qisheng Zhang  and
Linyan Guo
Ziyu Xu
Affiliation:
School of Geophysics and Information Technology, China University of Geosciences, Beijing, China
Qisheng Zhang
Affiliation:
School of Geophysics and Information Technology, China University of Geosciences, Beijing, China
Linyan Guo*
Affiliation:
School of Geophysics and Information Technology, China University of Geosciences, Beijing, China
*
Author for correspondence: Linyan Guo, E-mail: guoly@cugb.edu.cn
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Abstract

A printed multiband Multi-Input Multiple-Output (MIMO) antenna is proposed in this paper. This MIMO antenna system comprises two symmetric printed monopole antennas. Each antenna element consists of multiple bend lines, producing four resonant modes and covering the GSM900, PCS, LTE2300, and 5G bands. Simulated and measured results prove that the proposed MIMO antenna can be applied to traditional 2G, 3G, 4G, and present 5G mobile communication. By etching four inverted L-shaped grooves on its ground plate, mutual coupling between the adjacent antenna elements has been suppressed. This makes the |S21| at all four resonant modes is lower than −40 dB. In addition, its low coupling mechanism has been analyzed by surface current distribution. The designed multiband MIMO antenna provides an idea of reference to realize low mutual coupling between antenna elements, which is also realizable in infrared or optical regimes with appropriate designs.

Keywords

Multiple-input multiple-output (MIMO) antennamultibanddecouplingprinted monopole5G
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Issue 4 , May 2019 , pp. 413 - 419
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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