High gain microstrip antenna based on double superstrate layer for 60GHz communication systems

In this paper, a double dielectric superstrate layer DSL above a microstrip patch antenna in 60 GHz; based on the recent developed standards requirements; is studied and designed. The effects of microstrip antenna with a double superstrate layer on its gain, directivity and resonant characteristics is presented. We simulated the gain of antennas within and without a double superstrate layer. The maximum simulated radiation gain of the DSL antenna is 16.8 dBi, which is enhanced by about 9 dBi over the one without a superstrate at 60 GHz, and about 3 dBi over required gain delivered by 60 GHz standards. Also, this paper explains a comparison with a 8×1 microstrip antenna array. It is found that the simulated results of the DSL antenna had a higher gain compared with the array antenna, better HPBW, bandwidth and less side-lobe levels; with lower profile size.