Wide-Angle Scanning and High Isolation Dual-Polarized Base Station Antennas for Sub-6 GHz Applications

Authors

  • Fang-Fang Fan Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an, 710071, China
  • Pei-Pei Ma Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an, 710071, China
  • Qing-Lin Chen Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an, 710071, China

DOI:

https://doi.org/10.13052/2024.ACES.J.390208

Keywords:

5G base station antenna, dual-polarized antenna, high isolation, phased array antenna, wide-angle scanning

Abstract

This paper presents a wide-angle scanning and high isolation base station antenna array. The antenna element employs a compact dual-polarized umbrella-shaped printed dipole with a small size of 0.23λ0 × 0.23λ0 × 0.26λ0, which provides the possibility for a small element spacing array. The antenna element possesses wide 3 dB beamwidth of 84.6∘ benefiting from the pulling down of the dipole arms. Then, a dual-layer metal superstrate structure and metal wall is adopted to mitigate different kinds of mutual coupling between the dual-polarized antenna elements in the array. Owing to the wide beamwidth of the element and the low mutual coupling between the elements, the final 4×6 antenna array can achieve a good beam-scanning capability with maximum scanning angle up to ±55∘ and a small gain variation of less than 3 dB over the operation band 3.3-3.8 GHz. The fabricated array shows the measured isolation between all ports of the antennas is increased to more than 20 dB. Scanning characteristics also agree well with the simulated results. With the merits of wideband, low-cost (simple design and easy fabrication), wide-angle beam-scanning capacity, and good radiation performance, the proposed design has potential for application in 5G base stationsystems.

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Author Biographies

Fang-Fang Fan, Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an, 710071, China

Fang-Fang Fan received a Ph.D. degree in Electromagnetic Field and Microwave Technology from Xidian University in 2011. Currently, she is an associate professor at Xidian University. Her current research interests include antenna arrays, gap waveguide technology and base station antennas for 5G application.

Pei-Pei Ma, Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an, 710071, China

Pei-Pei Ma received her bachelor’s degree from Hainan University in July 2019 and she is currently pursuing the master’s degree at Xidian University from September 2021. Her research interests mainly concentrate on base station antennas and filters.

Qing-Lin Chen, Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an, 710071, China

Qing-Lin Chen received his bachelor’s degree in electronic information engineering from Xidian University, China, in July 2020. From September 2020, he studies for the master’s degree in electronic and communication engineering at Xidian University, China. His current interests are to research and design millimeter wave antenna array for 5G application.

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Published

2024-02-29

How to Cite

[1]
F.-F. Fan, P.-P. Ma, and Q.-L. Chen, “Wide-Angle Scanning and High Isolation Dual-Polarized Base Station Antennas for Sub-6 GHz Applications”, ACES Journal, vol. 39, no. 02, pp. 149–155, Feb. 2024.

Issue

2024: Vol 39 Iss 2

Section

General Submission

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