28 GHz Inset Feed Circular Shaped Compact Patch Antenna Array for 5G Wireless Communication

The fast-developing wireless devices at 5G band has made us to design an antenna array for energy radiation. In this paper, a new design for compact size antenna array for 5G communication system has been proposed. The proposed antenna array has been designed to operates in the frequency band of 27.089 - 28.856 GHz, which is part of millimeter wave. The design is compact in size and this antenna array occupies only 16 × 39 mm² and shaped as tree structure for gain improvement and for size reduction by using tilting method where branches are tilted at 30⁰. At resonant frequency, proposed antenna array achieved 9.04 dBi gain and 76.01% radiation efficiency.