On the Groundwave Excited by a Vertical Hertzian Dipole Over a Planar Conductor: Second-Order Asymptotic Expansion With Applications to Plasmonics Academic Article

abstract

• 1963-2012 IEEE. The surface electromagnetic fields radiated by a vertical electric dipole over a lossy conducting half-space are investigated. A simple derivation is presented of the second-order asymptotic groundwave expression, using a modified saddle-point method based on integration around vertical branch cuts. The method takes into account the influence of the Sommerfeld pole, which in the plasmonic case contributes a surface plasmon polariton. The proposed groundwave formulation is shown to be superior to the state-of-the-art Norton-Bannister theory for noble metals at optical wavelengths.

authors

• Michalski, Krzysztof
• Nevels, Robert

published proceedings

• IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES

author list (cited authors)

• Michalski, K. A., & Nevels, R. D.

citation count

• 13

complete list of authors

• Michalski, Krzysztof A||Nevels, Robert D

publication date

• April 2017

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Transactions on Microwave Theory and Techniques  Journal

keywords

• Hertzian Dipole
• Sommerfeld-norton Groundwave
• Surface Plasmon Polariton
• Zenneck Wave

Digital Object Identifier (DOI)

• 10.1109/TMTT.2016.2638817

start page

• 1133

end page

• 1140

volume

• 65

issue

• 4

URL

• http://dx.doi.org/10.1109/tmtt.2016.2638817