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- Title
Wide-Angle Scanning and High Isolation Dual-Polarized Base Station Antennas for Sub-6 GHz Applications.
- Authors
Fang-Fang Fan; Pei-Pei Ma; Qing-Lin Chen
- 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 beamscanning 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 station systems.
- Subjects
ANTENNAS (Electronics); BASE isolation system; ANTENNA arrays; PHASED array antennas
- Publication
Applied Computational Electromagnetics Society Journal, 2024, Vol 39, Issue 2, p149
- ISSN
1054-4887
- Publication type
Article
- DOI
10.13052/2024.ACES.J.390208