A Compact Tri-band Microstrip Patch Antenna Design for 5G millimeter wave applications

This paper outlines a unique and effective technique for creating a miniaturized three-band microstrip patch antenna that can be used in 5G millimeter wave wireless systems. The proposed antenna operates in three distinct bands at 15.2GHz, 23GHz, and 29.8GHz. The Roger RT/Duroid 5880 (tm) material has a permittivity (ε
r
= 2.2) and a thickness (H
s
) of 0.8mm, and the antenna was designed based on these attributes. This compact antenna utilizes a hexagon shape patch with three rectangular slots to enhance antenna performance. The obtained results indicate that the proposed antenna demonstrates a better return loss for all three frequencies are 15.2GHz, 23GHz, and 29.8GHz respectively. The antenna has a measured gains are 7.183dB at 15GHz, 5.79dB at 23GHz, and 6.72dB at 29.8GHz. The antenna directivity and radiation patterns are further investigated to determine the antenna's behavior. Simulation carried out using Ansys HFSS reveals an overall radiation efficiency of more than 95%. The proposed antenna is believed to have strong potential for 5G applications, mainly because of its small size, high gain, excellent radiation efficiency, and tri-band design. Overall, this antenna design offers potential advantages in size, weight, fabrication cost and efficiency to be used in 5G millimeter-wave applications.