This paper deals with the dielectric loaded Exponentially Tapered Slot (ETS) antenna needed for ultra-high-speed, ultra high-capacity wireless communication systems which work at 60 GHz for wireless communication networks applications and illustrates its specifications and requirements. The antenna in such systems requires high gain, high-efficient and high performance design specifications. The ETS antenna and the loaded dielectric are integrated by using the same single substrate resulting in easy fabrication and low cost. The ETS antenna with rectangular and elliptical shaped loaded dielectrics were designed and fabricated. These antennas have high gain and narrow beamwidths both in the E-plane and in the H-plane. The designed antenna is simulated using 3D electromagnetic software CST Microwave Studio and made comparison with Ansys HFSS to validate the design procedure. The results from the simulations and those from the measurements are in good agreement. © 2013 IEEE.