Abstract
In order to meet the requirements of ultra-wideband wireless communication system applications, this paper studies an ultra-wideband dual-polarization strongly-coupled array antenna. The array element is composed of two pairs of connected printed dipoles orthogonally. The feed network is constructed by the Marchand Balun and the Wilkinson power splitter and realizes the balanced feed, the impedance transformation and common mode resonance suppression. Simulated and measured results show that the proposed antenna achieves an impedance bandwidth of 1.5 GHz to 4.0 GHz, and an E-plane beam scanning range ±60°, H-plane beam scanning range ±50°, and the antenna structure is simple, and is suitable for the applications of dual-polarization wide-angle scanning phased array antenna system.
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