The horizontal wire over Earth as a transmission line: A model surface-impedance approach
Abstract
A simple model formulation and exact solution ia given for the per-unit-length surface impedance that characterizes the finite conducting Earth in a transmission-line approximation of the response of a horizontal wire over Earth to incident electromagnetic fields. The two-dimensional inhomogeneous plane waves in the model are discussed, and a transparent formulation and solution of the wave-vector dispersion relation is presented in terms of a complex refraction-angle formalism. Finally, we consider a TM (transverse magnetic) purely vector-potential model of the wire over ground in order to show that the TM surface-impedance 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