Title :
Examination of near-field vehicular antenna coupling
Author :
Levin, R.J. ; Wheeler, M.L.
Author_Institution :
Georgia Tech Res. Inst., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
The authors explore the limitations of using the far-field antenna coupling equation to predict the coupling between two VHF (30 to 88 MHz) antennas for separation distances as small as 0.05 wavelengths. Results of finite ground plane and scale model antenna coupling measurements conducted in an anechoic chamber were compared to antenna coupling values calculated with the far-field antenna coupling equation. The results indicate that the far-field dipole coupling equation can be used to predict the coupling (+2/-3 dB) between two low-gain 0.25-wavelength monopole antennas mounted on a flat plate for close spacings of 0.4 to 2.5 wavelengths
Keywords :
anechoic chambers; antenna radiation patterns; earthing; mobile antennas; monopole antennas; 30 to 88 MHz; VHF antennas; anechoic chamber; antenna coupling measurements; army vehicle; far-field antenna coupling equation; far-field dipole coupling equation; finite ground plane; flat plate; low gain antenna; near-field vehicular antenna coupling; quarter wavelength monopole antenna; scale model; separation distances; Anechoic chambers; Antenna measurements; Connectors; Electromagnetic coupling; Equations; Frequency; Intelligent vehicles; Receiving antennas; Testing; Wavelength measurement;
Conference_Titel :
Electromagnetic Compatibility, 1993. Symposium Record., 1993 IEEE International Symposium on
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-1304-6
DOI :
10.1109/ISEMC.1993.473775
