An efficient analysis of the far-field radiation of an electric/magnetic Hertzian dipole embedded in electromagnetic bandgap structures of periodic lossless multilayers using the equivalent CCITL model

Abstract

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

Keywords:

• Conjugately characteristic-impedance transmission line (CCITL)
• dispersion diagram
• electromagnetic bandgap (EBG)
• multilayer slab
• periodic structure
• reciprocity theorem

Acknowledgments

The authors would like to acknowledge Pathumwan Institute of Technology in Thailand for the usage of the simulation software.