High gain microstrip array antenna with SIW and FSS for beyond 5 G at THz band

There is a need for high-gain antennas to maintain communication up to hundreds of meters and simultaneously design a broadband antenna to facilitate a data rate of 0.02−0.1 Tb/s to establish a beyond 5G communication in the Terahertz (THz) band. Three sets of microstrip array antennas have been modeled with a CST MWS solver in a corporate-series fed technique for resonance frequencies of between 108.3–114.7 GHz. Some antennas included substrate integrated waveguide (SIW), while the third one was also with frequency selective surfaces (FSSs) for further enhancing the antenna gain. To verify the simulation results of the second antenna modeled with the CST MWS solver, this model was simulated with the ANSYS HFSS solver, with the adaptive mesh algorithm, and the simulation results obtained from both solvers were at an excellent agreement. These antennas may establish a beyond 5G short-range cellular communication system at the THz band.