Electromagnetic fields at points near pulse-excited linear antenna

Abstract

For a finite-length cylindrical monopole antenna mounted vertically on a perfectly conducting ground plane and driven by a dc pulse, the time variation of the electric and magnetic field intensities at points located at distances of the order of the monopole length from the antenna has been computed. The ratio of the monopole length to its radius was assumed to be 904, the source impedance 300 ohms, and the pulse length was taken to be equal to four tenths the time required for pulse transmission to the end of the antenna.