A Design of a mmWave Compact Antenna with a Microstrip Line Balun Feed for 5G Communications

Designing high gain and compact antennas is a very important task in 5G millimeter-wave (mmWave) mobile communication. Microstrip antennas are very popular due to their compact size and ease of fabrication. In this paper, a 5G compact mmWave dipole antenna is proposed. A double dipole is inserted at the ground plane to increase the realized gain and achieve a directive beam. Simulation results show that the proposed 5G antenna has an impedance bandwidth (IBW) of 3.5% and a 5.6 dBi realized gain at a frequency of 28 GHz.