Title :
Electromagnetic ground-wave field of vertical antennas for communication at 1 to 30 MHz
Author :
King, Ronold W.P. ; Harrison, Charles W., Jr.
Author_Institution :
Gordon McKay Lab., Harvard Univ., Cambridge, MA, USA
fDate :
11/1/1998 12:00:00 AM
Abstract :
Radio communication over the spherical surface of the Earth and sea makes use of vertical antennas in the frequency range from 1 to 30 MHz. For distances that extend beyond the approximation of a planar Earth, use must be made of the ground-wave. Following a description of antennas used on shipboard, their radiated fields are analyzed in the planar- and spherical-Earth regions. The latter involves new formulas for the field of vertical dipoles over the spherical surface of the sea
Keywords :
HF radio propagation; antenna radiation patterns; dipole antennas; electromagnetic fields; mobile antennas; mobile radio; ships; 1 to 30 MHz; HF; MF; distances; electromagnetic ground-wave field; frequency range; planar-Earth region; radiated fields; radio communication; sea; shipboard antennas; spherical Earth surface; spherical surface; vertical antennas; vertical dipoles; Antennas and propagation; Dipole antennas; Earth; Electromagnetic fields; Frequency; Marine vehicles; Sea surface; Surface waves; Transmitting antennas; Underwater communication;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
