Analysis of the far-field radiation of a Hertzian dipole embedded in EBG structures of periodic lossy multilayers using the equivalent BCITL model

In this paper, the far-field radiation of a Hertzian dipole embedded in electromagnetic bandgap (EBG) structures of periodic lossy multilayers is studied analytically and numerically. To simplify the analysis of this radiation problem, the equivalent transmission line (TL) model based on bi-characteristic-impedance TLs (BCITLs) is employed to efficiently compute the far-field radiation of the Hertzian dipole, where associated reflection coefficients, which are useful in computing far fields, can be determined effectively. Numerical results based on the equivalent BCITL model are in good agreement with those obtained from a commercial electromagnetic software.