Title :
Hemispherical power gain pattern measurements at 7.5 GHz
Author :
Haidle, Leroy L. ; Fitzgerrell, Richard G.
Author_Institution :
Inst. for Telecommunication Sci., Office of Telecommunications, U.S. Dept. of Commerce, Boulder, CO, USA
fDate :
5/1/1977 12:00:00 AM
Abstract :
A technique is described for measuring the complete hemispherical power-gain radiation pattern of a 2.44-m diameter paraboloidal reflector antenna mounted atop a mobile small earth terminal operating at 7.5 GHz. Antenna power-gain data were measured versus azimuth and elevation angles with the earth terminal centered on a heavy-duty turntable flush with test range ground.Test site illumination was achieved with airborne transmitting antennas. Conventional and statistical power-gain patterns are presented for left-hand circular polarization and cross polarization. Results indicate that similar systems cannot rely upon orthogonal polarization to provide isolation or compatibility beyond the angular region of the main lobe.
Keywords :
Antenna measurements; Parabolic reflector antennas; Reflector antennas, parabolic; Satellite communication, earth terminals; Antenna measurements; Antenna radiation patterns; Azimuth; Gain measurement; Mobile antennas; Polarization; Power measurement; Reflector antennas; Satellite ground stations; Transmitting antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.1977.1141592