Study the effect of EBG, around patches Microstrip Antenna

چکیده مقاله

EBG is the  abbreviation of electromagnetic band-gap structure.The utilization of electromagnetic band-gap (EBG) structures is an attractive way to reduce surface wave excitation in printed antenna geometries so to mitigate the mutual coupling problem. Mutual coupling between antenna elements is of great importance in antenna array designs.In this paper first we want to simulate rectangular Microstrip patch antenna without EBG and then  simulate that with EBG  and show efects of EBG structures on reflection coefficient and it’s gain .Also we  show effects of EBG structures in all around array microstrip antenna and see mutual coupling and reflection coefficient in both structures.EBG that we used, is Mushroom-like EBG, that consists of four parts: a metal ground plane, a dielectric substrate, periodic metal patches on top of the substrate, and vertical vias connecting the patches to the ground plane.This simulation is done by HFSS software.

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