Title :
Characteristics of the TE210 mode in circular apertures as used for satellite tracking
Author_Institution :
Loral Skynet, Hawlet, PA
fDate :
7/1/2001 12:00:00 AM
Abstract :
Monopulse tracking antennas are customarily used for tracking satellites subsequent to launch, in transfer orbit, and on station. A convenient means of obtaining a monopulse pattern is to couple to the null-on-axis TE210 mode of the tracking antenna´s aperture in addition to the aperture´s dominant mode. An expression is derived here for the polar-angular distance from the boresight of a circular-aperture antenna to the peaks of the TE210 null-on-axis lobe as a function of azimuthal angle. In addition, the relative levels of the peaks of the TE21 0 mode, relative to the mainlobe, are evaluated
Keywords :
antenna radiation patterns; aperture antennas; satellite ground stations; satellite tracking; Earth-station antennas; Poynting vector; TE210 mode characteristics; azimuthal angle dependence; boresight; circular apertures; circular-aperture antenna; monopulse pattern; monopulse tracking antennas; null-on-axis lobe; polar-angular distance; satellite tracking; Aperture antennas; Aperture coupled antennas; Azimuthal angle; Narrowband; Satellite antennas; Signal generators; Space vehicles; Telemetry; Tellurium;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
