Surface Wave Reduction in Integrated Microstrip Patch Antenna at 60GHz Band

摘要

In this paper present a comparing between different techniques that used to enhance the performance of integrated micro-strip patch antennas at 60GHz band. These include tapered feed matching, back holes and Electromagnetic Band Gab (EBG) to reduce the surface waves losses. The antenna structures which are proposed in this paper combines the advantages of inset taper micro-strip feed line with the advantages of backed holes patch antenna and electromagnetic band gap (EBG) which is simplifies the antenna structure to make it easier to integrate the micro-strip patch antenna with MMICs. A significantly increased radiation efficiency has been shown by the back holes patch antennas compared to micro-strip patch antennas directly printed on top of the same Gillum Arsenate (GaAs) substrate. The simulation results show that the maximum predicted gain is 3.9dB for the antennas of the cylindrical back holes, while a conventional micro-strip patch on the same substrate has a maximum predicted gain of 1.9dB. The antenna of the EBG structures shows broadband characteristics. The 10dB bandwidth is 7.3 GHz from 57.8 GHz to 64.5 GHz. The simulation process has been done through 3D high frequency structure simulator (HFSS).