Abstract:
In fifth-generation (5G) communication systems, the mm-wave (milli meter-wave) frequency band is a key aspect in overcoming the exponential increase
in data traffic of the existing cellular networks, which requires compatible and low profile antenna arrays. In this case, a microstrip patch antenna (MPA) is a viable
option. However, MPA has certain limitations, such as the deterioration of the
antenna’s bandwidth and radiation efficiency with its substrate thickness. In addi tion, its gain and directivity are too low to meet the 5G systems requirements in
beamforming techniques of massive MIMO systems. Thus, to ameliorate these
limitations, in this paper, a microstrip patch antenna arrays (2x2, 4x4, and 8x8) with
semi-elliptical shape slotted patch and etched ground structure for 5G broadband
applications is proposed. The radiator element of the antenna is designed using
Rogers 5880 substrate with a dielectric constant of 2.2 and thickness of 0.3449 mm.
It has been designed to operate at 28 GHz in LMDS (local multipoint block
