Investigation of EBG Array Performance on Decreasing the Mutual Coupling

Nowadays, it is desirable in many applications to prevent a device from being affected by an external electromagnetic fields or prevent the electromagnetic field intrusion out of the device. It is coveted to eliminate or reduce the coupling between adjacent devices and these are done by utilizing electromagnetic shields and absorbers. For each of these goals, there are materials that are commonly used. But with the emergence of new classes of materials called met material and certain characteristics that they show in propagation of electromagnetic fields, new structures with improved performance, smaller size and lighter weight than a conventional structure for shields and absorbers became fabricated. Previously, EBG structures have been used to reduce coupling in and in all of them, equally sized EBGs have been used together in various types. In this paper EBG structures including parallel plates of EBGs are being used to reduce the mutual coupling between the two Omni-directional antennas. All simulations are based on full-wave simulations and performed in HFSS For FEM modeling. The proposed structures is attempted to be suitable for X and Ku band.