On the computation of plane-wave impressed fields and far-zone fields of arbitrary current sources in planar multilayer dielectric and plasmonic media

Abstract

A unified and succinct transmission line formulation is presented for the computation of the plane-wave impressed fields and far-zone radiation fields due to arbitrary electric and magnetic current source distributions embedded in planar layered media. The equivalence principle and the spectral-domain transmission-line network analogue of the multilayer medium are used to express the fields in terms of the voltage and current transmission-line Green functions. The new formulation is applied to sample problems involving both dielectric and plasmonic multilayer media.

Keywords:

• Planar layered media
• impressed plane-wave fields
• far-zone radiation fields
• Hertzian dipole
• surface plasmon polariton

Acknowledgements

The first author would like to thank Prof. Nadson W. P. de Souza for bringing the plasmonic waveguide problem to his attention.

Notes

No potential conflict of interest was reported by the authors.