Title :
Design of a large-aperture lens antenna usable over a +or-15 degrees scanning sector
Author :
Parsons, Chester L. ; Miller, Lee S.
Author_Institution :
NASA, Goddard Space Flight Center, Wallops Island, VA, USA
Abstract :
A lens antenna design is described which requires the formation of both on-axis and far off-axis beams. The aperture is about 100 wavelengths in diameter, and the off-axis beams are displaced +or-20 beamwidths from the axis. The results are indicative of the much greater scan capabilities of lensatic antennas compared to paraboloidal designs when both have single-aperture nonarray feeds.<>
Keywords :
antenna radiation patterns; lens antennas; microwave antennas; scanning antennas; far off-axis beams; large-aperture lens antenna; on-axis beams; scanning sector; Antenna feeds; Antenna radiation patterns; Aperture antennas; Equations; Lenses; Lighting; NASA; Optical design;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
