The horizontal wire over Earth as a transmission line: A model surfaceimpedance approach
Abstract
A simple model formulation and exact solution ia given for the perunitlength surface impedance that characterizes the finite conducting Earth in a transmissionline approximation of the response of a horizontal wire over Earth to incident electromagnetic fields. The twodimensional inhomogeneous plane waves in the model are discussed, and a transparent formulation and solution of the wavevector dispersion relation is presented in terms of a complex refractionangle formalism. Finally, we consider a TM (transverse magnetic) purely vectorpotential model of the wire over ground in order to show that the TM surfaceimpedance model explicity excludes TE (transverse electric) waves and is, in fact, identical to the familiar transmission line.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 July 1982
 Bibcode:
 1982STIN...8310334W
 Keywords:

 Earth (Planet);
 Earth Surface;
 Electromagnetic Fields;
 Horizontal Orientation;
 Transmission Lines;
 Electric Wire;
 Electrical Impedance;
 Plane Waves;
 Power Lines;
 Surfaces;
 Communications and Radar