Microstrip patch antenna design for 5G communication technology

In this study, several Rectangular Microstrip Antennas (RMA) are designed and simulated for 5G technology at frequencies 28 and 38 GHz. All presented designs are constructed and simulated by using Ansys HFSS 3D electromagnetic (EM) simulation software. By using non-contacting insert feeding or proximity coupling technique, at 28 GHz single, 28/38 GHz dual-band single element and array type RMA designs are constructed. Moreover, the bandwidth of RMAs has been increased by slotting Rings, Rods, Rings/Rods on the ground surface, or adding a parasitic element to the antenna structure. Simulation results are compared with similar studies in the literature and from these comparisons, it has been seen that output antenna parameters such as bandwidth, gain, or return loss are improved very well for at 28 GHz single element and at 28/38 GHz array type RMA designs. Although the bandwidth for a single element at 28/38 GHz Dual Band RMA designs is not as high as some reference studies given in comparisons, RMA designs given in those studies have very low gain or high return loss which are not desired for a high-efficiency antenna. The several 1×2 array RMA designs with various DGS (Defected ground structure) structures have been designed using the a non-contacting feeding method. Among these designs, the stacked 1×2 array RMA design with Ring/Rod-shaped DGS was compared with reference antennas, and it was concluded that it had broadband and high gain for 28 GHz. As the last design in the thesis, non-contacting insert feeding array 1×4 RMA Structure with DGS was created. The bandwidth of the 1×4 RMA array for 28 GHz has been increased by creating ring-shaped defects on the ground surface.