Metasurface-based coupling suppression for wideband multiple-input-multiple-output antenna arrays

Xiaojun Zou; Guangming Wang; Yawei Wang; Binfeng Zong

doi:10.1364/oe.444293

journal article Nov 30, 2021

Metasurface-based coupling suppression for wideband multiple-input-multiple-output antenna arrays

Xiaojun Zou

Guangming Wang

Yawei Wang

Binfeng Zong

Optics Express Vol. 29 No. 25 pp. 41643 · Optica Publishing Group

View at Publisher Save 10.1364/oe.444293

Abstract

Wideband decoupling requires simultaneous improvements in the performance of an antenna array in its operating band. In this paper, a metasurface structure is proposed to accomplish this difficult task in wideband dual-layer coupled patch multiple-input-multiple-output (MIMO) antenna arrays. The decoupling mechanism is analyzed based on network and field theories, and dual-band response is achieved by incorporating multilayer hybrid split-ring resonators to create a meta-atom equipped with single negative property. By introducing the metasurface into the H-plane coupled MIMO array, the working bandwidth improves from 21.7% to 25.4%, mutual coupling is suppressed to less than −20 dB, gains mostly improve, and radiation patterns are modified. Moreover, the metasurface-based decoupling structure is extended to the E-plane coupled and two-dimensional arrays, exhibiting the same decoupling capability in the 22.9% and 23.6% bandwidths, respectively. Compared with existing metasurface-based decoupling works, the proposed metasurface, which is designed to be coplanar with the array, brings about no change to the array profile and possesses a wider decoupling bandwidth. These results indicate its potential in efficiently decoupling multielement wideband MIMO antenna arrays.

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Metrics

24

Citations

27

References

Details

Published: Nov 30, 2021
Vol/Issue: 29(25)
Pages: 41643
License: View

Authors

X

Xiaojun Zou

Air Force Engineering University

G

Guangming Wang

Air Force Engineering University

Y

Yawei Wang

Air Force Engineering University

B

Binfeng Zong

Air Force Engineering University

Funding

National Natural Science Foundation of China Award: 61871394

Natural Science Foundation of Shaanxi Province Award: 2020JQ-482

Cite This Article

Xiaojun Zou, Guangming Wang, Yawei Wang, et al. (2021). Metasurface-based coupling suppression for wideband multiple-input-multiple-output antenna arrays. Optics Express, 29(25), 41643. https://doi.org/10.1364/oe.444293

Metasurface-based coupling suppression for wideband multiple-input-multiple-output antenna arrays

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