Abstract
A dual feed vertical polarization circular array antenna for WLAN and 5G (sub-6 GHz) small-cell base station applications have been presented. The proposed antenna is a 2×2 array antenna that formed by 4 circular patch elements, two antenna ports, two feeding network circuits and a PCB with ground plane. This antenna design provides a wide frequency operating band Covering the WLAN and 5G (sub-6 GHz) smallcell base station band. The antenna is designed for 1/2 wavelength characteristics. The dielectric material of the antenna is an FR4 board with a ground plane size of 127 x 127 x 2.8 mm3. The feed port uses a matching network to convert 50 ohms and uses 50 ohm SMA connectors on each of the two feed ports. Finally, the circular patch size is modified to achieve the desired operating band.
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