Title :
Near-field corrections to site attenuation
Author :
Gavenda, J. David
Author_Institution :
Dept. of Phys., Texas Univ., Austin, TX, USA
fDate :
8/1/1994 12:00:00 AM
Abstract :
The theoretical model used for calculating normalized site attenuation for broadband antennas in ANSI C63.4-1992 and for antenna calibration in ANSI C63.5-1988 includes only the radiation terms in the electric field. The omission of the near field terms leads to errors of as much as 2.0 dB at 30 MHz for horizontally polarized antennas separated by 3 m. Corrected values of normalized site attenuation and E Dmax are presented for the 30-300 MHz frequency range
Keywords :
antenna radiation patterns; antenna testing; calibration; electromagnetic compatibility; electromagnetic wave absorption; electromagnetic wave scattering; error analysis; standards; 30 to 200 MHz; ANSI C63.4-1992; ANSI C63.5-1988; EDmax; VHF; antenna calibration; broadband antennas; electric field; error; horizontally polarized antennas; near field terms; site attenuation; Antenna measurements; Antenna theory; Attenuation measurement; Broadband antennas; Calibration; Dipole antennas; Electromagnetic compatibility; Frequency; Polarization; Testing;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
