engleski

Spectral Domain Analysis of Dipole Coupling over Different Electromagnetic Band Gap Structures

The concept of electromagnetic band-gap (EBG) structures has been recently introduced in electromagnetics to describe periodic structures along which or through which there is no propagation of electromagnetic wave in some frequency band. The purpose of this paper is to determine the Green’ s functions for different realizations of EBG structures and to calculate coupling between two dipoles placed above these EBG structures. The applied method avoids the complexity of the Floquet mode approach and the limitations of the surface wave approach. For each considered structure some sort of asymptotic boundary conditions are derived in which the periodicity of the structure is assumed to be negligible compared to the wavelength. The goal (and the test) of the applied method is to determine properties of each considered EBG structure. Therefore, all important physical phenomenon should be taken into account.

EBG structures; periodic structures; boundary conditions; numerical modeling

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