Abstract
This paper presents a base station antenna with dual-band and dual-polarization for 5G mobile communication. It consists of a pair of bowtie and bent stripline cross dipoles to obtain two linear polarizations (±45°). The bowtie and bent stripline dipole provide 700MHz and 1800 MHz dual operating frequencies. The antenna depicts an impedance characteristic of about 12% and 15.8% at 775 MHz and 1850 MHz for S <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf> ≤ −10 dB (+45° polarization) and S <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">22</inf> ≤ −10 dB (−45° polarization). Also, the isolation, which |S12| is about -33 dB and --30 dB at 775 MHz and 1850 MHz, between the two polarizations in the operating band is provided. The measured peak gain of the antenna is about 1.26 and 4.76 dBi at 775 MHz and 1850 MHz. Moreover, the omnidirectional radiation patterns and dual-polarization over the dual operating bands are obtained. The antenna is proportionally designed for 5G mobile communication base station applications.
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