Title :
Influence of finite ground conductivity on the fields of a vertical traveling wave of current
fDate :
2/1/1999 12:00:00 AM
Abstract :
Following Wait (1998), we deal mainly with the radiation fields of a vertically directed and attenuated line current (lightning) above a plane Earth. In the present case, the conductivity and permittivity of the ground modify the radiation pattern in the air compared with the usually assumed case of infinite conductivity. The effect is quite striking at low elevation angles where the radiation pattern now has a null for grazing angles
Keywords :
antenna radiation patterns; electrical conductivity; electromagnetic pulse; lightning; permittivity; current vertical traveling wave; electromagnetic pulse; finite ground conductivity; grazing angles; lightning EM pulse; low elevation angle; permittivity; radiation fields; radiation pattern; vertically directed attenuated line current; Conductivity; EMP radiation effects; Earth; Lightning; Optical reflection; Pattern analysis; Permittivity; Polarization; Refractive index; Surface impedance;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
