Title :
A time-domain exploration of how equivalent charge and radiation from thin wires might be related
Author :
Miller, E.K. ; Burke, G.J.
Author_Institution :
3225 Calle Celestial, Santa Fe, NM, USA
Abstract :
One potential advantage of a time-domain (TD) model is the possibility it may offer for obtaining a better understanding of electromagnetic (EM) phenomena, including the physics of radiation. The article examines the time variation of the broadside far electric field radiated by an impulsively excited straight wire to determine whether, and how, that radiation might be related to the motion of equivalent charge on the wire, using the Lienard-Wiechert expression for the E-field as a reference. Basically, an old problem is being revisited and examined in more detail to see whether new insights might be achieved. One question to be considered, in particular, is whether such time-domain phenomena might shed any light on the question about whether straight-wire antennas radiate from anywhere else besides their ends and feedpoint.
Keywords :
antenna radiation patterns; electric current; electric fields; time-domain analysis; wire antennas; E-field; EM phenomena; Lienard-Wiechert expression; broadside far electric field; electromagnetic phenomena; equivalent charge motion; feedpoint radiation; impulsively excited straight wire; radiation physics; straight-wire antennas; thin wire radiation; time variation; time-domain model; Antenna feeds; Electromagnetic modeling; Electromagnetic radiation; Integral equations; Iron; Physics; Propagation delay; Time domain analysis; Voltage; Wires;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874894