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Electromagnetic ground-wave field of vertical antennas for communication at 1 to 30 MHz

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2 Author(s)
King, Ronold W.P. ; Gordon McKay Lab., Harvard Univ., Cambridge, MA, USA ; Harrison, Charles W.

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

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Electromagnetic Compatibility, IEEE Transactions on  (Volume:40 ,  Issue: 4 )