ON THE FAR-ZONE ELECTROMAGNETIC FIELD OF A VERTICAL AND HORIZONTAL ELECTRICAL DIPOLE OVER AN IMPERFECTLY CONDUCTING HALF-SPACE WITH EXTENSIONS TO PLASMONICS
Abstract
The new asymptotic formulas for the radiation fields from vertical and horizontal electric dipoles over an imperfectly conducting half-space are derived using the modified saddle point method. The asymptotic formulation is assessed in comparison with the Norton-Bannister formula, King formula, and the results of rigorous numerical evaluation of the Sommerfeld integrals. From RMS errors of the numerical results of the field patterns and surface field plots, the new second-order asymptotic formulation has been found to be more accurate than the other compared formula for the problems with seawater in microwave range and gold in the visible range, especially in the plasmonic case.
Subject
far-zone radiation fieldsfar-zone surface fields
surface plasmon polariton
modified saddle-point integration
Citation
Lin, Hung I (2021). ON THE FAR-ZONE ELECTROMAGNETIC FIELD OF A VERTICAL AND HORIZONTAL ELECTRICAL DIPOLE OVER AN IMPERFECTLY CONDUCTING HALF-SPACE WITH EXTENSIONS TO PLASMONICS. Master's thesis, Texas A&M University. Available electronically from https : / /hdl .handle .net /1969 .1 /195086.