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A Compact Base Station MIMO Antenna Array With Miniaturized Antenna Elements
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DOI：10.1109/TCSII.2023.3314518.png)
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摘要
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Multiple-input and multiple-output (MIMO) antenna arrays have become a key component for 5G wireless network. In this brief, a compact base station MIMO antenna array is constructed with a novel miniaturized antenna element. The novelty of the miniaturized antenna design lies in the meander-line radiation arm designs for size miniaturization, and a ring director placed over the aperture for achieving wide impedance bandwidth and stable radiation patterns. The size of the miniaturized antenna element is only 40 mm x 40 mm (0.22 lambda(L)x0.22 lambda(L)),where lambda(L) is the wavelength at the lowest frequency of the 1.7-2.7 GHz operating frequency band. The miniaturized antenna enables densely antenna placement with an 80 mm $\times 80$ mm square lattice, while simultaneously offering high port isolation, mutual coupling suppression, and non-distorted antenna radiation patterns in such a crowding array environment. Experimental validation of an array prototype confirms the high port isolation (28 dB), stable realized gain (8 +/- 0.3 dB), stable 3 dB beamwidth (70(degrees)+/- 1(degrees)), and stable 10 dB beamwidth 127(degrees)+/- 2(degrees) over a 45.5% bandwidth (1.7-2.7 GHz).
Keyword:
Antenna arrays
Dipole antennas
Metals
Broadband antennas
Bandwidth
Substrates
MIMO communication
MIMO
base station antenna array
compact antenna
期刊
I
IF:
4.9
论文数:
8.8K
被引数:
2.5W
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