Input conductance and current distribution of long horizontal wire antennas above the earth's surface

Abstract

Closed form expressions for computing the input conductance and current distribution of long horizontal antennas near the earth are derived. The theory is an extension of the recently developed theory of modal propagation on an infinite horizontal wire. In that work, a previously unreported propagating mode is shown to be an important part of the current excited on a horizontal wire by a voltage source. It is shown that long antennas have certain advantages when used in geologic remote sensing applications.