Abstract
In this letter, a novel aperture-shared dual-polarized omnidirectional antenna for 5G application is proposed. To realize the compact and broadband characteristics, the vertically polarization (VP) and horizontal polarization (HP) share a physical region and a Wilkinson power divider with a Z-shaped feeding networks is utilized. Two antenna prototypes are fabricated and measured, with the dimensions are 0.70λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> × 0.70λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> × 0.07λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> and 0.62λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> × 0.62λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> × 0.09λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> for the 3.5GHz and 5.8GHz antennas, respectively. The port isolation of the 3.5 GHz antenna is better than 35 dB, with radiation efficiency higher than 85.4%. The measured -10dB impedance bandwidths of the 5.8GHz antenna are better than 23.8%. The proposed antennas are suitable for 5G application for their low-profile, compact, broadband, and dual polarization characteristics.
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